Aviation English
Aviation English Glossary
1237 professional aviation english terms with definitions, pronunciation and examples. Learn what each term means — free with Termify.
A
- ADFベアリングとは？ The direction to or from a Non-Directional Beacon as indicated by the aircraft's Automatic Direction Finder equipment, r...
- ADIRS-1不作動とは？ Primary ADIRS channel 1 failed; aircraft relying on remaining or standby navigation sources in accordance with MEL.
- APU燃料供給とは？ The dedicated fuel supply system or operation that delivers fuel from the aircraft's tanks to the Auxiliary Power Unit (...
- APU自動始動シーケンスとは？ A programmed series of actions by which the auxiliary power unit starts automatically and safely without crew interventi...
- ARINC 664 航空機データネットワークとは？ ARINC 664, also known as AFDX, is a deterministic Ethernet network protocol for reliable, high-speed data communications...
- ASU接続済みとは？ Confirmation that the Air Start Unit is attached and supplying pneumatic power for engine start procedures on the ground...
- ATAチャプター参照とは？ Standardized reference number identifying aircraft system/component according to the ATA 100/2200 maintenance coding sys...
- ATSエアウェイとは？ A defined corridor in controlled airspace designated for the use of aircraft flying under Air Traffic Services, with spe...
- Aレベル整備点検とは？ A scheduled, routine maintenance check performed at regular intervals to ensure the continued airworthiness of the aircr...
D
- DMEアークとは？ A curved flight path at a constant distance from a DME station, commonly used in instrument approach procedures to trans...
- DME併設VOR局とは？ A navigation aid installation where a VHF Omnidirectional Range (VOR) and Distance Measuring Equipment (DME) are located...
- Dレベル重整備点検とは？ An extensive, scheduled maintenance inspection that involves major disassembly, overhaul, and comprehensive structural a...
E
G
- GBASランディングシステムとは？ A precision approach and landing system using GNSS signals enhanced by a Ground-Based Augmentation System (GBAS), provid...
- GBAS地上局とは？ A ground-based transmitter providing precision approach and landing guidance by augmenting GNSS signals for aircraft at ...
- GPSアプローチとは？ An instrument approach procedure that uses signals from the Global Positioning System (GPS) for navigation and guidance ...
- GPU接続済みとは？ Confirmation that the Ground Power Unit is attached and supplying external electrical power to the aircraft while on the...
I
- IFRをキャンセルとは？ An instruction to terminate the Instrument Flight Rules flight plan.
- IFRを維持するとは？ A phrase used to instruct the pilot to continue flying under Instrument Flight Rules.
- ILSアプローチクリアとは？ An instruction indicating that the aircraft is authorized to execute an Instrument Landing System approach.
- ILSアプローチ許可とは？ ATC clearance instructing an aircraft to conduct an Instrument Landing System (ILS) approach to a specified runway.
L
P
Q
R
- RAT温度とは？ Temperatures measured by the Ram Air Temperature (RAT) probe, used for performance calculations and fluid blending ratio...
- RNAVアプローチクリアとは？ An instruction indicating that the aircraft is authorized to execute an RNAV approach.
- RNAVアプローチ許可とは？ ATC clearance authorizing an aircraft to conduct an Area Navigation (RNAV) approach procedure to a specified runway.
- RNAVルートとは？ A published airway or route defined by area navigation (RNAV) waypoints, allowing aircraft to fly direct between points ...
- RVSM承認とは？ An official authorisation for an aircraft and operator to use Reduced Vertical Separation Minimum (RVSM) airspace, allow...
S
T
V
- VFRを維持するとは？ A phrase used to instruct the pilot to continue flying under Visual Flight Rules.
- VHF全方向式無線標識とは？ A ground-based radio navigation system providing azimuth guidance to aircraft using VHF signals.
- VHF全方向式無線標識とは？ Ground-based VHF radio beacon providing 360-degree azimuth guidance to aircraft.
- VHF無線機1不作動とは？ Primary VHF radio channel 1 is not functional, requiring use of alternate radio or backup for ATC communications.
- VORアプローチクリアとは？ An instruction indicating that the aircraft is authorized to execute a VOR approach.
- VORラジアルとは？ A specific magnetic bearing from a VOR station, identified by its radial number, used for aircraft navigation and ATC in...
- VOR・TACAN併設局とは？ A ground-based radio navigation aid where a VHF Omnidirectional Range (VOR) and a Tactical Air Navigation (TACAN) facili...
ア
- アイデントとは？ A function on the aircraft transponder that, when activated, causes the radar return to flash on the controller’s screen...
- アイドルディセントとは？ A descent procedure where engines are set to idle thrust, allowing the aircraft to descend primarily due to gravity, opt...
- アイドルリバースとは？ Minimum reverse-thrust setting used during rollout to aid deceleration while reducing noise, FOD risk, and brake wear.
- アウトバウンドレグとは？ The segment of a holding pattern or procedure flown away from the holding fix or navigation aid, typically timed or dist...
- アウトフローバルブとは？ A valve that regulates the discharge of air from the pressurized cabin to maintain desired cabin pressure.
- アクチュエータ制御エレクトロニクスとは？ Boeing system managing flight control actuator signals for surface movement, including redundancy and fault isolation.
- アッパーATSエアウェイとは？ A designated corridor in controlled airspace, typically above a specified flight level (e.g., FL245), for use by aircraf...
- アップウィンドとは？ The initial leg of the traffic pattern after takeoff, flown parallel to the runway and in the direction of departure.
- アビオニクスのイーサネット給電とは？ A system that delivers both power and data over Ethernet cables to avionics equipment, reducing wiring complexity and en...
- アビオニクスのトランスポートレイヤーセキュリティとは？ The use of cryptographic protocols (TLS/SSL) to protect avionics network data in transit from unauthorized access or tam...
- アビオニクスイーサネットネットワークとは？ A high-speed, deterministic digital data network based on Ethernet technology, used to interconnect avionics systems on ...
- アビオニクスファンとは？ A fan dedicated to cooling avionics equipment by circulating air through the electronics bay.
- アビオニクスベイの煙とは？ Smoke detected in the avionics bay, indicating potential fire or overheating of electronic components, requiring immedia...
- アビオニクス・フルデュプレックス・スイッチドイーサネットとは？ A deterministic, high-speed, full-duplex switched Ethernet network designed specifically for critical avionics systems, ...
- アビオニクス冷却システムとは？ A system providing airflow and temperature regulation to prevent overheating of aircraft avionics components.
- アプローチクリアとは？ An instruction indicating that the aircraft is authorized to execute an approach procedure.
- アプローチ参照速度とは？ Speed selected for use on final approach segment, ensuring safe control margin above stall but stable profile.
- アルファとは？ The letter 'A' as spoken in the ICAO phonetic alphabet to avoid confusion in radio communications.
- アルファフロアプロテクションとは？ Autothrust safeguard that commands maximum thrust if angle-of-attack approaches stall, preventing loss of lift.
- アンチコリジョンライトとは？ High-intensity red or white lights installed on an aircraft and activated before engine start and during all movement to...
- アンチスキッドシステム不作動とは？ A condition where the antiskid braking system is not operational, requiring alternate braking procedures and possible pe...
- アークとは？ A segment of a circle at a fixed distance from a navigation aid, usually flown as part of a procedure turn, approach, or...
イ
- イエロー油圧系統とは？ One of three independent hydraulic systems on Airbus aircraft, supplying power to specific flight controls, brakes, and ...
- イコールタイムポイントとは？ The geographic point along a route at which the flying time to two selected diversion aerodromes is equal, used for cont...
- イニシャルアプローチとは？ The segment of an instrument approach procedure between the initial approach fix and the intermediate or final approach ...
- インターセプトとは？ A maneuver where an aircraft joins a specified course, radial, localizer, track, or route as instructed by ATC, commonly...
- インターフォン不作動とは？ Internal crew communication system not functioning, affecting cockpit-cabin coordination and triggering MEL action.
- インターミディエイトフィックスとは？ A designated point on an instrument approach procedure (IAP) between the initial and final approach fixes, used to defin...
- インテグレーテッドドライブジェネレーターとは？ A generator that converts variable engine speed to constant frequency AC power for aircraft electrical systems.
- インディアとは？ The letter 'I' as spoken in the ICAO phonetic alphabet, used in ATC communications for identifying taxiways, holding poi...
- インディアとは？ The letter 'I' as spoken in the ICAO phonetic alphabet, used in ATC for identifying taxiways, holding points, and aircra...
- インバウンドレグとは？ The segment of a holding pattern or approach procedure flown toward the fix or navigation aid, typically timed or distan...
ウ
- ウィングウォーカーとは？ Ground personnel positioned at each wingtip to ensure safe clearance of obstacles during aircraft ground movements.
- ウィンドシアとは？ A sudden change in wind speed and/or direction over a short distance, hazardous during takeoff and landing.
- ウイスキーとは？ The ICAO/FAA radiotelephony spelling for the letter 'W'. Used in call signs, aircraft registration, and waypoint identif...
- ウイングアンチアイスとは？ A system that prevents or removes ice accumulation on the wing leading edges using bleed air or electrical elements.
- ウイングタンクとは？ A fuel tank located within the wing structure of an aircraft, commonly used for storage and balancing fuel load.
- ウインドシア回避操作とは？ A predefined and trained maneuver to escape from windshear conditions during takeoff or landing.
- ウェイポイントとは？ Specific geographical locations defined by coordinates used to guide aircraft along a flight route or procedure.
- ウェイポイントとは？ A specified geographical location, defined by coordinates, used for navigation and flight planning, including RNAV proce...
- ウェイポイント位置通報とは？ A mandatory ATC report specifying aircraft position, time, flight level, and estimates for the next waypoint, typically ...
- ウェイポイント通過後とは？ A routing or procedural instruction indicating action to be taken immediately after passing a specified navigation fix.
- ウォーターサービスカートとは？ Ground-service trolley supplying potable-water fill or grey-water drain for aircraft tanks.
- ウルトラロングホールとは？ A non-stop flight covering an exceptionally long distance, typically over 16 hours or more than 7,000 nautical miles, re...
エ
- エアサイドとは？ The part of an airport accessible to aircraft, including runways, taxiways, and ramps, but restricted to authorized pers...
- エアデータ・イナーシャル・リファレンス・ユニットとは？ An advanced aircraft system combining air data sensors and inertial reference to provide navigation and performance data...
- エアデータ・リファレンスとは？ Aircraft module collecting and providing airspeed, altitude, and temperature data from external probes.
- エイトとは？ The digit '8' as spoken in the ICAO radiotelephony alphabet, pronounced 'Eight' for clarity in all number transmissions ...
- エコーとは？ The letter 'E' as spoken in the ICAO phonetic alphabet, used to avoid miscommunication during ATC radio transmissions, e...
- エスケープルート計画とは？ The advance definition of contingency flight paths from the main track to a safe diversion airport in case of in-flight ...
- エスコートとは？ The authorized accompaniment of an aircraft, vehicle, or personnel by an assigned entity, usually for safety or security...
- エックスレイとは？ The ICAO/FAA radiotelephony spelling for the letter 'X'. Used in call signs, aircraft registration, and waypoint identif...
- エナジーマネジメントとは？ Pilot technique balancing airspeed and altitude by trading potential and kinetic energy for efficient trajectory control...
- エプロンとは？ A defined area on an airport intended to accommodate aircraft for purposes of loading or unloading passengers or cargo, ...
- エリアナビゲーションとは？ A method of navigation allowing aircraft operation on any desired flight path within the coverage of navigation aids or ...
- エリアナビゲーション必須航法性能とは？ A navigation specification for aircraft that combines Area Navigation (RNAV) with defined Required Navigation Performanc...
- エルロントリムとは？ A flight-control adjustment that sets ailerons to correct lateral imbalance and maintain wings-level flight.
- エレベーターパワーコントロールユニットとは？ A hydraulic actuator that converts hydraulic pressure into elevator movement, enabling pitch control of the aircraft.
- エレベーター・エルロン・コンピュータとは？ A dedicated computer on Airbus aircraft that processes inputs and controls elevator and aileron surfaces.
- エンジニアリングオーダー適用済みとは？ Formal modification or repair directive implemented and documented by engineering, referenced in aircraft technical reco...
- エンジンアンチアイスとは？ A system that prevents or removes ice formation on engine inlets, typically using hot bleed air.
- エンジンオイル圧力とは？ The pressure of oil circulating through an aircraft engine, essential for lubrication and cooling of moving components.
- エンジンシャットダウンとは？ The procedure in which the aircraft's engines and systems are switched off after reaching the parking position, ending t...
- エンジンスタートとは？ The action of starting aircraft engines, typically following ATC clearance. Communicated between flight crew and ground ...
- エンジンヘルスモニタリングとは？ Continuous or periodic analysis of engine data to assess performance, detect faults, and schedule maintenance (ICAO Doc ...
- エンジン不作動ドリフトとは？ The lateral displacement from track or altitude lost when an aircraft operates with one or more engines inoperative, esp...
- エンジン分離とは？ A catastrophic in-flight event where the engine detaches from the aircraft structure, requiring immediate emergency hand...
- エンジン圧力比とは？ Ratio of total pressure at the engine exhaust to that at the engine inlet, used as a primary engine thrust indicator.
- エンジン始動許可とは？ ATC clearance authorizing the aircraft to start its engines, typically when pushback is not required.
- エンジン故障とは？ A condition where one or more aircraft engines cease to provide thrust, requiring immediate emergency procedures.
- エンジン火災消火ボトルとは？ A pressurized container installed in aircraft engines used to release extinguishing agent when a fire is detected.
- エンジン燃料供給とは？ The process or system of supplying fuel from the tanks to an aircraft engine for combustion and operation.
- エンジン表示およびクルーアラートシステムメッセージとは？ A visual and/or aural alert generated by the Engine Indication and Crew Alerting System (EICAS or ECAM) to inform pilots...
- エンジン表示・乗員警報システムとは？ A Boeing system that displays engine and system data and alerts for operational and abnormal conditions.
- エンジン計器ディスプレイとは？ The cockpit display panel showing all vital engine parameters, including N1/N2, temperature, oil pressure, fuel flow, an...
- エンジン運転区域とは？ A designated ground location where aircraft engines may be operated at power levels above idle for maintenance or operat...
- エントリー・トランジションポイントとは？ The designated waypoint where an aircraft changes from domestic to oceanic or remote-airspace procedures and communicati...
オ
- オイル温度マージンとは？ The difference between actual engine oil temperature and the maximum safe operating limit, ensuring safe operation and i...
- オスカーとは？ The letter 'O' as spoken in the ICAO phonetic alphabet, used in ATC communication for the identification of taxiways, ho...
- オフセットとは？ A lateral deviation from a published route, airway, or track, authorized by ATC to avoid weather, traffic, or other haza...
- オプションとは？ An ATC clearance that permits the pilot to perform a touch and go, stop and go, low approach, or full stop landing at th...
- オルタネートコントロールモードとは？ A degraded mode in fly-by-wire aircraft providing limited flight envelope protections, used when normal law is lost due ...
- オーシャニックトラックとは？ A published route across oceanic airspace, usually coordinated daily, which enables safe and efficient passage of aircra...
- オートスロットルシステムとは？ A system that automatically sets and maintains engine thrust based on flight parameters and autopilot commands.
- オートブレーキシステムとは？ A system that automatically applies braking at a selected rate during landing or rejected take-off to optimize stopping ...
- オーバーウィング給油とは？ Refueling conducted from a hose and nozzle inserted into the over-wing filler port.
- オーバーヘッドとは？ A visual maneuver used to enter the traffic pattern from above the airfield, typically involving an initial pass over th...
- オービットとは？ A 360-degree turn in the air to delay or maintain position.
- オーブン回路とは？ The dedicated electrical circuit that supplies power to ovens in the aircraft galley. Its status is monitored for operat...
- オールクリアとは？ Final ramp-crew signal that all personnel, equipment and pin checks are complete; aircraft environs safe for taxi or eng...
カ
- カテゴリーAとは？ A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the M...
- カテゴリーBとは？ A Minimum Equipment List category requiring rectification of an inoperative item within three consecutive calendar days,...
- カテゴリーCとは？ A Minimum Equipment List category requiring rectification of an inoperative item within ten consecutive calendar days, e...
- カテゴリーDとは？ A Minimum Equipment List category requiring rectification of an inoperative item within 120 consecutive calendar days, e...
- カーゴドアとは？ Large exterior hinged or plug-type door on the aircraft fuselage used for loading and unloading freight or baggage conta...
キ
- キャビンインターコミュニケーションシステムとは？ An integrated system enabling voice communication between cabin crew and cockpit, and among crew stations.
- キャビンインターフォンとは？ An internal aircraft communication system that enables direct, secure voice communication between cabin crew, cockpit cr...
- キャビンセキュアとは？ A procedural phrase indicating that all passengers are seated, seatbelts fastened, and the cabin is safe for taxi, takeo...
- キャビンプレッシャーコントローラーとは？ Automatic device that regulates cabin altitude and rate of pressure change by controlling the outflow valve.
- キャビンプレッシャーコントローラー1不作動とは？ Primary automatic pressurization channel failed; crew managing cabin differential in manual mode per QRH procedures.
- キャビンレディとは？ A standardized phrase indicating that the cabin has been fully prepared for takeoff, landing, or other specified phase o...
- キャビンログブックとは？ The official record kept on board for documenting all technical, operational, or passenger-related events and discrepanc...
- キャビンログ欠陥とは？ A discrepancy, malfunction, or abnormality reported by crew and recorded in the aircraft cabin log for maintenance atten...
- キャビン・セキュアとは？ Formal statement by cabin crew that all safety checks are completed, all items stowed, doors armed, and the cabin is rea...
- キャビン照明パネルとは？ Flight attendant control panel for selecting cabin lighting modes, intensity and colour settings.
- キャリーオン荷物とは？ Passenger items approved to remain with the traveler in the cabin and stowed under-seat or in overhead bins.
- キロとは？ The letter 'K' as spoken in the ICAO phonetic alphabet, used to identify taxiways, holding points, or aircraft callsigns...
ギ
- ギアアップとは？ A cockpit command for retracting the landing gear, given after a positive rate of climb is established post-takeoff.
- ギャレーごみ箱とは？ Fire-retardant container in the galley for collection of cabin refuse; equipped with self-closing lid.
- ギャレーセキュアとは？ A phrase indicating that all galley equipment, carts, and supplies are properly stowed and locked for safe taxi, takeoff...
- ギャレー位置とは？ The specified location or compartment onboard the aircraft dedicated to the storage and preparation of food and beverage...
- ギャレー電源とは？ The electrical power supply dedicated to the aircraft galley, required for safe operation of galley equipment such as ov...
ク
- クイックアクセスレコーダーとは？ An on-board device that rapidly records selected flight parameters for operational monitoring and safety analysis, with ...
- クイックリファレンスマニュアルとは？ A cockpit manual containing condensed checklists and procedures for abnormal and emergency situations.
- クライムバイアとは？ An ATC instruction to follow published climb restrictions, altitudes, and routes as depicted in a Standard Instrument De...
- クライムパワーとは？ A reduced engine power setting selected after take-off and acceleration, used for the climb phase to minimize engine wea...
- クラス1ナビゲーションとは？ Navigation in airspace where the position of the aircraft can be continuously determined by reference to ground-based ra...
- クラス2ナビゲーションとは？ Navigation in airspace where position cannot be reliably fixed using ground-based radio navigation aids, requiring the u...
- クラッシュアックスとは？ A robust, sharp-edged hand tool stowed in the cockpit, intended for emergency access, fire-fighting, or egress during ev...
- クラッシュアックスとは？ Cockpit-mounted emergency axe for cutting or prying during evacuation or fire-fighting operations.
- クラッシュポジションとは？ A prescribed body posture adopted by crew and passengers to maximize survivability in the event of an imminent impact or...
- クリアアイシングとは？ The formation of smooth, transparent ice on aircraft surfaces, resulting from slow freezing of large supercooled water d...
- クリアアイスとは？ A transparent, smooth, and hard ice layer formed by the slow freezing of supercooled water droplets on aircraft surfaces...
- クリアウェイ長とは？ A defined rectangular area beyond the runway, free of obstructions, suitable for aircraft to continue take-off in case o...
- クリアードとは？ An explicit authorization by ATC for a pilot to proceed under specified conditions within controlled airspace.
- クリティカルポイントとは？ A position along a route where, in the event of an emergency or abnormal situation, a decision must be made to proceed o...
- クリーンコンフィグとは？ An aircraft configuration in which all lift devices such as flaps and slats are retracted and landing gear is up, optimi...
- クルーの勤務時間とは？ The total period a crew member is on duty, including all pre-flight, in-flight, and post-flight responsibilities, regula...
- クルーシート不作動とは？ Flight-deck seat fails to lock, adjust, or retract, potentially compromising crew safety and requiring MEL evaluation.
- クルーレストとは？ A designated area on the aircraft reserved exclusively for crew members to rest or sleep during flight operations, parti...
- クロスウィンドとは？ The flight path at right angles to the landing runway at the upwind end.
- クロスウィンド成分とは？ The part of the wind velocity that is perpendicular to the runway or the aircraft's track, affecting lateral control dur...
- クロスチェックとは？ The action of verifying that a safety-related task (such as arming/disarming doors) has been correctly completed by anot...
- クロスフィードとは？ A fuel system operation allowing fuel to be transferred or used from one tank to another to maintain aircraft balance or...
グ
- グライドスロープとは？ The vertical guidance portion of an ILS, providing an optimal descent path to the runway threshold for precision approac...
- グライドスロープとは？ The vertical guidance component of an Instrument Landing System (ILS) that provides the optimal descent path to the runw...
- グラウンドスポイラーとは？ Spoiler panels on the wings that fully deploy upon landing to disrupt lift and aid in braking and deceleration.
- グランドに連絡とは？ Instruction from ATC to switch communication to the ground control frequency, typically issued after landing or before t...
- グランドタイムインジケーターとは？ A device or system that records or displays the elapsed time an aircraft spends on the ground between arrival and depart...
- グリコール回収とは？ The process of collecting used glycol-based de-icing or anti-icing fluids from airport surfaces after application for en...
- グリッドナビゲーションとは？ A navigation technique using a grid reference system rather than true or magnetic north, primarily in polar regions wher...
- グリーン油圧系統とは？ One of three independent hydraulic systems on Airbus aircraft, powering primary flight controls, landing gear, and other...
ケ
- ケベックとは？ The letter 'Q' as spoken in the ICAO phonetic alphabet, used in ATC phraseology for identification of taxiways, holding ...
- ケータリング積込とは？ The process of loading all required food, beverages, and associated service items onto an aircraft prior to departure, c...
- ケータリング車両とは？ A ground service vehicle used to deliver food and beverages to an aircraft, typically accessing the rear or forward serv...
コ
- コピーの準備ができましたとは？ A phrase used by pilots to indicate they are prepared to receive and write down instructions or clearances.
- コンタクトアプローチとは？ An IFR approach procedure that permits an aircraft under VFR conditions to proceed to the destination airport by visual ...
- コンティンジェンシー手順とは？ A predetermined sequence of actions to be followed when an abnormal or emergency situation occurs during flight, as defi...
- コンテナローダーとは？ A type of ground service equipment used to lift and load cargo containers or Unit Load Devices (ULDs) into the aircraft'...
- コントローラーパイロットリンクとは？ A data communication system (CPDLC) used for direct exchange of messages between air traffic controllers and pilots, esp...
- コントローラー・パイロット・データリンク・アップリンクメッセージとは？ A digital message sent from ATC to the flight deck over the Controller-Pilot Data Link Communications (CPDLC) system, in...
- コントローラー・パイロット・データリンク通信とは？ A digital communication system that enables the exchange of messages between air traffic controllers and pilots via data...
- コントローラー・パイロット・データリンク通信とは？ A digital communication system enabling direct message exchange between air traffic controllers and pilots via data link...
- コンパス偏差とは？ Error between magnetic compass indication and actual magnetic heading exceeding permissible limits; requires calibration...
- コンピュータベーストレーニングチェックとは？ A mandatory electronic assessment verifying that aircrew or ATC personnel have completed required computer-based trainin...
- コンフリクトクリアとは？ An indication that the aircraft is no longer in a conflicting situation with another aircraft.
- コースとは？ The intended direction of flight expressed as an angle from North, along which an aircraft is to be flown.
- コース（意図された進路）とは？ The intended horizontal direction of travel of an aircraft over the ground, usually expressed in degrees from North.
- コーヒーメーカーとは？ A dedicated appliance installed in the aircraft galley to brew hot coffee for passengers and crew. Its operation is subj...
- コールドソークとは？ A condition in which aircraft fuel, systems, or equipment are cooled for an extended period during high-altitude flight,...
- コールドソークとは？ A condition where aircraft fuel or components become extremely cold after prolonged exposure to low outside air temperat...
ゴ
- ゴルフとは？ The letter 'G' as spoken in the ICAO phonetic alphabet, used for clear identification of taxiways, holding points, or ai...
- ゴーアラウンドとは？ An aborted landing approach, requiring the aircraft to climb and reattempt landing.
- ゴーアラウンドポイントとは？ A specified point in an instrument approach procedure at which a missed approach must be initiated if the required visua...
- ゴーアラウンド高度とは？ The published altitude to which an aircraft must climb when executing a missed approach or go-around procedure.
サ
- サイドステップとは？ A maneuver to change from one parallel runway to another during approach.
- サイバーセキュリティ強化とは？ The process of applying security measures to reduce cyberattack risk on aircraft systems and networks (EASA, ICAO Doc 10...
- サウザンドとは？ The ICAO/FAA radiotelephony word for '1000', used in expressing altitudes, heights, and visibility in multiples of one t...
- サバイバルキットとは？ A set of equipment carried on board aircraft and liferafts to provide basic survival supplies such as food, water, and s...
- サバイバルストロボライトとは？ Battery-powered high-intensity flashing beacon attached to life-vest or raft to enhance night-time visibility for rescue...
- サバイバルビーコンとは？ A portable transmitter emitting distress signals to assist search and rescue teams in locating survivors after a forced ...
- サバイバルレーションパックとは？ Pre-sealed emergency food package stowed in life-rafts providing high-energy biscuits and vitamin tablets for post-ditch...
- サーキットパターンとは？ A standard rectangular traffic pattern around the airfield used for sequencing aircraft for landing or training operatio...
- サービスの不規則性とは？ Any deviation from normal operating procedures, schedules, or expected service standards during a flight or at the airpo...
- サービスドアとは？ A designated aircraft door used primarily for catering, cleaning, or maintenance services, not intended for passenger us...
- サービスブリテン保留中とは？ Manufacturer’s recommended modification or inspection not yet incorporated; outstanding action listed in maintenance rec...
- サービス困難レポートとは？ Official report filed to aviation authority documenting significant aircraft/system in-service malfunction, defect, or r...
シ
- シエラとは？ The letter 'S' as spoken in the ICAO phonetic alphabet, used in ATC phraseology to identify taxiways, holding points, an...
- シグナルスモークとは？ Hand-held maritime flare producing coloured smoke during daylight to signal distress location to aircraft or vessels.
- シグニフィカントウェザー図とは？ A meteorological chart that displays forecasted significant weather phenomena, including turbulence, icing, and cumuloni...
- シグニフィカント気温層とは？ A specific altitude or flight level at which temperature changes are forecast to be significant for flight operations, a...
- システムシノプティックディスプレイとは？ A cockpit display providing a schematic overview of aircraft systems’ status, such as hydraulics, electrics, fuel, and a...
- システム全体の情報管理とは？ A global aviation data-sharing infrastructure standardizing information exchange among ATM stakeholders, improving situa...
- シックスとは？ The ICAO/FAA radiotelephony spelling for the numeral '6'. Used for unambiguous communication of headings, altitudes, fre...
- ショートファイナルとは？ The segment of the final approach path closest to the runway.
- シングルポイント給油とは？ Method of pressurised refueling using one connector that simultaneously feeds all aircraft tanks.
- シーケンシングとは？ The process of arranging aircraft in a specific order for arrival, approach, or departure, ensuring safe and efficient f...
- シーダイマーカーとは？ Bright fluorescent dye packet released into water to create high-contrast slick, aiding aerial visual location of surviv...
- シートベルトとは？ Primary restraint harness securing an aircraft occupant during all phases of flight and turbulence.
- シートベルトエクステンダーとは？ Certified strap and buckle section that lengthens a passenger seat belt when required for fit or special needs.
- シートベルトカッターとは？ Knife-type tool with guarded blade carried in cockpit or cabin to sever jammed seat-belts during emergency evacuation or...
- シートベルトサインとは？ An illuminated sign in the aircraft cabin that instructs passengers to fasten their seatbelts.
- シートポケットとは？ Fabric or plastic pocket on seat-back for storing safety card, magazines and small personal items.
ジ
- ジェットブラストとは？ The high-speed exhaust from a jet engine, which can cause damage or injury if encountered by personnel or equipment.
- ジェットルートとは？ A designated airway in controlled airspace, typically for aircraft operating at high altitudes (usually above FL180 in t...
- ジェット気流とは？ A narrow, fast-flowing air current in the upper atmosphere, typically between 20 000 and 50 000 ft, affecting cruise per...
- ジェット気流コアとは？ The center of maximum wind velocity within a jet stream, critical for optimizing flight path, fuel efficiency, and turbu...
- ジェネレーターコントロールユニットとは？ Electronic module that manages and protects an aircraft generator, monitoring voltage, current, and system faults.
- ジャンプシートとは？ A foldable seat located in the cockpit or cabin, reserved for off-duty crew, training personnel, or authorized observers...
- ジャンプシート権限とは？ Permission granted by the operator or authority for a non-operating crew member to occupy a jumpseat in the cockpit or c...
- ジュリエットとは？ The letter 'J' as spoken in the ICAO phonetic alphabet, used in ATC to designate taxiways, holding points, or aircraft i...
ス
- スイッチしてとは？ Instruction to change the aircraft's communication radio frequency to another specified ATC unit or frequency.
- スキューティーログピー図とは？ A thermodynamic diagram used in meteorology to plot atmospheric soundings, displaying temperature, dew point, and wind p...
- スクォーク・アイデントとは？ An ATC instruction to activate the IDENT feature on the aircraft's transponder, which causes the radar return to flash, ...
- スコールとは？ Sudden increase in wind speed of at least 15 knots, sustained for at least one minute.
- スタティックウィック欠品とは？ Static electricity discharge wick absent from wing or control surface, potentially increasing radio interference until r...
- スタビライザートリムとは？ The adjustment of the horizontal stabilizer angle to balance the aircraft in pitch for all flight phases.
- スタンダードディパーチャーとは？ A pre-planned IFR departure route (SID) published for use by departing aircraft, providing obstacle clearance and effici...
- スタンドとは？ A designated area where an aircraft is parked for loading, unloading, or maintenance.
- スタンバイADIRUとは？ Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.
- スターとは？ Standard Terminal Arrival Route: a published IFR arrival procedure that streamlines traffic flow from the enroute phase ...
- ステア・バイ・ワイヤとは？ A digital control system where electronic signals, not mechanical linkages, direct the nose-gear steering.
- スティックシェーカー作動とは？ The activation of a device that rapidly vibrates the control column to warn the pilot of an impending aerodynamic stall.
- ステップクライムとは？ A procedure in which an aircraft increases cruise altitude in steps as weight decreases, optimizing fuel efficiency and ...
- ステップクライムとは？ A series of planned altitude increases during cruise, typically due to decreasing aircraft weight from fuel burn, allowi...
- ステップクライムプロファイルとは？ A flight profile in which an aircraft increases cruise flight level in stages as weight decreases and conditions permit,...
- ステライル・コックピットとは？ A mandatory operational environment during critical phases of flight—such as taxi, takeoff, landing, and below 10,000 fe...
- ステーションまでの時間とは？ The calculated or measured time remaining to reach a radio navigation aid, waypoint, or fix, used for position reporting...
- ストップウェイの長さとは？ Length Of The Designated Area Beyond The Runway End That Can Be Used To Decelerate During A Rejected Take‑Off, As Part O...
- ストップウェイ長とは？ The length of a stopway usable in the event of a rejected take-off, beyond the take-off run available.
- ストップサインとは？ A clearly marked sign on the apron or taxiway instructing aircraft or vehicles to come to a complete stop and await furt...
- スノータムとは？ Special NOTAM issued when snow, ice or slush significantly affects aerodrome movement areas.
- スピードブレーキとは？ A flight control surface deployed by pilots to increase drag and reduce airspeed or descent rate, especially during desc...
- スピードブレークレバーとは？ A cockpit control that arms or actuates spoiler panels to reduce speed or rate of descent during flight and landing roll...
- スプレーバーとは？ A component of de-icing or anti-icing equipment that distributes fluid evenly across aircraft surfaces for contaminant r...
- スポイラーとは？ Movable surfaces on the wings deployed to reduce lift, increase drag, and assist in decelerating the aircraft after touc...
- スポイラーパネルとは？ A hinged surface on the upper wing that disrupts airflow, reducing lift and increasing drag for roll control or descent.
- スポイラー・エレベーター・コンピュータとは？ An Airbus computer managing spoilers, elevator backup, and other flight control surfaces for redundancy and flight envel...
- スポイラー非作動とは？ A system status where one or more spoiler panels are intentionally or automatically rendered inoperative for the flight.
- スポットとは？ Designated areas on the apron where aircraft are parked for boarding, servicing, or loading/unloading operations.
- スモークフードとは？ A self-contained hood providing filtered air to crew in smoke or fume-filled environments; enables safe intervention in ...
- スライドラフトとは？ Inflatable evacuation slide that converts to a life-raft for ditching or over-water evacuation.
- スライド・アームとは？ A condition in which an aircraft's emergency evacuation slide is mechanically engaged to deploy automatically upon door ...
- スライド・ディスアームとは？ A state in which an aircraft's emergency evacuation slide is mechanically disengaged so it will not deploy if the door i...
- スライド作動とは？ Confirms that the emergency evacuation slides are engaged and will deploy automatically if the door is opened.
- スライド圧とは？ Gauge-indicated reservoir pressure that confirms an emergency evacuation slide is sufficiently charged for rapid inflati...
- スライド展開とは？ Activation of an inflatable evacuation slide from an aircraft door to enable rapid passenger egress.
- スライド解除とは？ The condition in which the emergency evacuation slides are disengaged from automatic deployment, typically after arrival...
- スライド解除とは？ Indicates that the emergency evacuation slides are disengaged from the doors and will not deploy if the door is opened.
- スラストリダクションとは？ A standard procedure to reduce engine thrust from take-off power to a lower, climb-appropriate setting at a specific alt...
- スラストリバーサとは？ A device that redirects the engine's thrust forward to help slow the aircraft after landing, typically activated on touc...
- スラストリバーサーとは？ A device used to redirect engine thrust forward to assist with deceleration after landing.
- スラストリバーサー不作動とは？ The thrust reverser mechanism cannot be deployed, requiring alternative braking methods and possibly affecting landing p...
- スラストレバー角度とは？ The position or angle of the thrust lever, directly corresponding to engine power demand.
- スラットとは？ Movable aerodynamic surfaces located on the leading edge of the wing, extended to increase lift at low speeds during tak...
- スリーとは？ The ICAO/FAA radiotelephony spelling for the numeral '3'. Used to clearly transmit numbers, altitudes, headings, runways...
- スレッショルドクロッシングハイトとは？ The height above runway threshold at which the aircraft’s glide path crosses the runway during final approach, typically...
セ
- セキュアブートプロセスとは？ A cryptographic method that ensures only authorized software can be loaded on avionics systems during startup (EASA, ICA...
- セキュリティタイとは？ Approved plastic or textile ties used by the crew to restrain passengers or secure items for safety or security purposes...
- セキュリティブリーフィングとは？ A formal communication given to crew or passengers outlining relevant safety, emergency, and security procedures for the...
- セグメント2の上昇とは？ Climb segment from gear retraction to acceleration altitude with one-engine inoperative, maintaining prescribed gradient...
- セブンとは？ The digit '7' as spoken in the ICAO radiotelephony alphabet, pronounced 'Seven' for clarity in altitude, heading, runway...
- センタータンクとは？ The main fuel tank located in the central section of an aircraft’s fuselage, typically used before the wing tanks.
- セーフティコーンとは？ A brightly colored, cone-shaped marker placed around aircraft or equipment to designate safety zones and prevent collisi...
- セーフティバルブとは？ A valve designed to automatically relieve excess pressure or vacuum to protect the aircraft structure.
タ
- タイプIII液体とは？ A low-viscosity anti-icing fluid designed for slower aircraft, offering both de-icing and anti-icing properties with lim...
- タイプII液体とは？ A glycol-based anti-icing fluid with higher viscosity than Type I, applied to aircraft surfaces to prevent ice accumulat...
- タイプIV液体とは？ A high-viscosity, anti-icing fluid used on fast, jet aircraft to provide maximum holdover time and surface protection ag...
- タイプI液体とは？ A heated, glycol-based de-icing fluid used primarily to remove frost, ice, and snow from aircraft surfaces before depart...
- タキシーとは？ To move an aircraft on the surface of an aerodrome under its own power, except when taking off and landing. Used in ATC ...
- タキシーを継続せよとは？ An instruction to proceed with ground movement along a designated taxi route or surface without stopping or awaiting fur...
- タキシーウェイとは？ A defined path at an aerodrome, established for the taxiing of aircraft and intended to provide a link between one part ...
- タキシー・トゥとは？ An ATC instruction authorizing an aircraft to proceed under its own power to a specified location on the aerodrome, such...
- タキシー誘導線とは？ A painted marking on an airport surface that provides directional guidance for aircraft taxiing along specific routes.
- タクシーの準備ができましたとは？ A phrase used by pilots to indicate they are prepared to begin taxiing.
- タクシーインとは？ The movement of an aircraft under its own power from the runway or landing area to the assigned parking position or gate...
- タクシーウェイとは？ A path on an airport connecting runways with aprons, hangars, terminals, and other facilities.
- タスクカード完了とは？ Documented evidence that all steps of an assigned maintenance task card have been performed and signed off.
- タッチ・アンド・ゴーとは？ A maneuver in which an aircraft lands on a runway and immediately takes off again without coming to a full stop.
- タワーに連絡とは？ Instruction from ATC to switch radio communication from the current frequency to the aerodrome control tower frequency f...
- タンクイナーティングとは？ The process of introducing an inert gas, usually nitrogen, into an aircraft fuel tank to reduce oxygen concentration and...
- タンクリング決定とは？ The operational determination to carry extra fuel for economic or logistical reasons, usually based on fuel pricing and ...
- タンゴとは？ The letter 'T' as spoken in the ICAO phonetic alphabet, used in ATC phraseology to clearly identify taxiways, holding po...
- ターミナル飛行場気象予報とは？ A concise statement of the expected meteorological conditions at an aerodrome for a specified period.
- ターンアラウンドとは？ The time taken to unload an arriving aircraft and prepare it for departure, including disembarkation, cleaning, refuelin...
ダ
- ダイバージョン燃料とは？ The amount of fuel required to divert from planned destination to an alternate aerodrome, factoring weather, distance, a...
- ダイレクトで進入とは？ An ATC instruction authorizing an aircraft to fly directly to a specified point, bypassing the previously assigned route...
- ダイレクトエントリーとは？ A holding entry method where the aircraft flies directly onto the inbound leg of the holding pattern upon crossing the f...
- ダイレクトコントロールモードとは？ A degraded flight control mode in fly-by-wire aircraft where control surfaces respond directly to pilot input without fl...
- ダイレクト・トゥとは？ A clearance to fly directly from the present position to a specified navigation fix or waypoint, bypassing intervening f...
- ダウンウィンドとは？ The flight path parallel to the landing runway in the opposite direction of landing.
- ダウンウィンドに合流せよとは？ An instruction to enter the traffic circuit on the downwind leg, parallel to and opposite direction of landing runway.
- ダブルエンジン故障とは？ A critical emergency situation where both engines of a multi-engine aircraft cease functioning in flight.
チ
- チップディテクターとは？ A sensor in an engine or gearbox that detects metallic particles, indicating wear or damage to internal components.
- チャイルドリストレイントデバイスとは？ FAA/ICAO-approved seat or harness securing children under two for taxi, take-off, turbulence and landing.
- チャーリーとは？ The letter 'C' as spoken in the ICAO phonetic alphabet, used for clarity in radio communications.
- チョークとは？ Wedges placed in front of and behind aircraft wheels to prevent movement when parked.
- チョーククリアとは？ A confirmation from ground crew that all wheel chocks have been removed and the aircraft is clear to move.
テ
- ティアドロップエントリーとは？ A method of entering a holding pattern in which the aircraft initially flies outbound on a course 30 degrees offset from...
- テイクオフロールとは？ The phase of flight beginning when an aircraft starts its ground run on the runway after take-off clearance, acceleratin...
- テクニカルディスパッチシートとは？ A formal document or electronic record certifying an aircraft’s airworthiness and readiness for flight after maintenance...
- テーブルラッチとは？ Mechanical catch that locks the passenger tray table in its stowed or deployed position.
- テールストライクとは？ An incident in which the tail of the aircraft contacts the runway surface during take-off or landing due to excessive pi...
デ
- ディシジョン高度とは？ Specified altitude in precision approach at which a missed approach must be initiated if runway not in sight.
- ディスパッチ逸脱とは？ An authorized variation from standard aircraft configuration or equipment status, documented for legal dispatch of a fli...
- ディパーチャーに連絡とは？ ATC instruction to switch radio communication to the departure controller, usually issued shortly after takeoff for enro...
- ディペンデント・サーベイランス・コントラクトとは？ A prearranged automatic reporting agreement (ADS-C) between ATC and aircraft for position, intent, and status data in re...
- デジタルノータムとは？ A machine-readable NOTAM provided in digital format for direct integration into flight planning, EFBs, and avionics syst...
- デジタル地形および障害物情報管理システムとは？ A database system providing real-time digital terrain and obstacle data for flight planning, situational awareness, and ...
- デジタル自動ターミナル情報サービスとは？ A system that provides pre-recorded, digital, real-time airport and weather information to pilots automatically (ICAO Do...
- デュアルレーンスライドとは？ Evacuation slide designed with two parallel lanes to expedite passenger egress on wide-body aircraft exits.
- デルタとは？ The letter 'D' as spoken in the ICAO phonetic alphabet, used for clear identification of taxiways, holding points, or ca...
- デレートスラストとは？ Engine rated for lower maximum take-off thrust than certification limit, permanently reducing stress and maintenance cos...
- デレート離陸推力とは？ Reduced engine thrust setting used for take-off to extend engine life, improve fuel efficiency, and meet noise abatement...
- データリンク接続とは？ A digital communications channel established between aircraft and ATC/dispatch for automatic reporting, clearances, and ...
- データ通信とは？ Digital message exchange between air traffic control and aircraft, including CPDLC, ADS-C, and other datalink systems fo...
ト
- トイレの煙とは？ The detection or presence of smoke within an aircraft lavatory, indicating a possible fire hazard and requiring immediat...
- トイレサービスとは？ Ground service involving the emptying, cleaning, and replenishing of aircraft lavatory systems.
- トイレ使用可能とは？ Confirmation that the aircraft's lavatory system is fully operational and available for use during flight.
- トゥルーコースとは？ The intended direction of flight over the ground referenced to true north, prior to adjustment for wind, magnetic variat...
- トップ・オブ・クライムとは？ The defined point in a flight where the aircraft completes its climb and levels off at the planned cruise altitude. Mark...
- トップ・オブ・クライムとは？ The calculated point along the flight path where an aircraft completes its climb and levels off at cruising altitude as ...
- トップ・オブ・ディセントとは？ The calculated point along a flight path where the aircraft begins its planned descent from cruise altitude toward the d...
- トラックアングルとは？ The actual direction of an aircraft's path over the ground, expressed as an angle relative to north, independent of head...
- トラック（対地進路）とは？ The aircraft’s actual path over the ground, measured in degrees from North. Distinct from heading, which is the directio...
- トラフィックアラートとは？ A warning issued to alert the pilot of nearby aircraft that may pose a collision risk.
- トラフィック未視認とは？ Phrase used by pilots to indicate that they do not have visual contact with the reported traffic.
- トラフィック視認とは？ Phrase used by pilots to confirm that they have visually acquired the reported traffic.
- トラブルシューティング必要とは？ Further diagnostic action needed to isolate cause of technical fault or failure not resolved by initial inspection.
- トランジションとは？ A published route or procedure that connects the en-route structure to an instrument approach or departure, often used t...
- トランジションレベルとは？ The lowest flight level available for use above the transition altitude. Aircraft climbing through the transition altitu...
- トランジション速度とは？ The airspeed at which the transition from one phase of flight to another occurs, often referencing a speed for configura...
- トランジション高度とは？ The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes, and above w...
- トランスポンダをスタンバイモードに設定とは？ An instruction for a pilot to set the aircraft's transponder to standby mode, ceasing transmission of the transponder si...
- トランスポンダコードを設定とは？ An instruction for a pilot to set a specific transponder code, enabling air traffic control to identify and track the ai...
- トランスポンダーコントロールパネルとは？ Cockpit panel used for selecting, setting, and controlling aircraft transponder modes and codes.
- トランスポンダーコード7700とは？ The ATC transponder code universally set to indicate a general emergency, alerting controllers to an onboard emergency s...
- トランスポンダ故障とは？ The aircraft’s transponder is not transmitting, impacting radar identification and requiring ATC notification and altern...
- トリムエアとは？ A system that adds small amounts of hot bleed air to the mixed supply to fine-tune cabin temperature zones.
- トリム燃料タンクとは？ A specialized fuel tank located in the horizontal stabilizer or tail, used to optimize aircraft balance and fuel managem...
- トレーリングエッジデバイスとは？ A movable aerodynamic surface located on the trailing edge of an aircraft wing, such as a flap, extended to increase lif...
- トロリーシールとは？ Tamper-evident security seals affixed to galley trolleys or beverage carts to ensure contents have not been accessed bet...
- トーバーとは？ A metal bar used to connect an aircraft's nose gear to a pushback tractor for towing or pushback operations.
- トーバーレス牽引車とは？ A powered ground vehicle that lifts the aircraft's nose gear and tows it without the need for a separate towbar.
- トーバー解除とは？ Ground-crew command to release the towbar from the aircraft nose-gear after pushback is complete and brakes set.
ド
- ドアをディスアームするとは？ To set aircraft doors to a disarmed mode so that evacuation slides will not deploy when the door is opened.
- ドアステータスとは？ The operational state of aircraft doors, including whether they are armed, disarmed, open, closed, locked, or unlocked, ...
- ドアステータスとは？ The current operational state of all aircraft doors—open, closed, armed, disarmed—communicated between cabin crew, fligh...
- ドア閉鎖とは？ Indicates that all required aircraft doors are physically closed, typically before engine start or pushback.
- ドア開放とは？ Confirms that one or more aircraft doors are physically open, typically during boarding, deplaning, or servicing.
- ドリフトダウンとは？ A procedure for descending to a safe altitude following engine failure at cruise. Aircraft descends along a planned path...
- ドリフトダウン手順とは？ A contingency descent profile followed after an engine failure at cruise altitude to achieve the aircraft’s new single-e...
- ドリンク引き出しとは？ A dedicated sliding compartment in the aircraft galley for storing drinks, ice, and related service items, accessible to...
ナ
ノ
- ノズル圧力とは？ The pressure at which de-icing or anti-icing fluid is delivered through equipment nozzles, affecting spray coverage and ...
- ノーズギア操舵とは？ The system that allows pilots to steer the aircraft’s nose landing gear during taxi and ground operations.
- ノーベンバーとは？ The letter 'N' as spoken in the ICAO phonetic alphabet, used in ATC communications for taxiway and holding point identif...
ハ
- ハイジャックとは？ The unlawful seizure of an aircraft by an individual or group, often involving threats or force, during any phase of fli...
- ハイローダーとは？ A high-lift ground support equipment used to load and unload Unit Load Devices (ULDs) or pallets into aircraft cargo hol...
- ハロン消火器とは？ A fire extinguisher charged with halon gas, used for rapid suppression of onboard electrical and flammable liquid fires.
- ハロン消火器とは？ Hand-held extinguisher charged with Halon 1211/1301 for cabin or flight-deck Class B/C fires.
- ハンドレッドとは？ The ICAO/FAA standard radiotelephony word for the figure '100' when transmitting altitudes, flight levels, and headings ...
- ハーネスとは？ A system of webbing straps used to secure a flight crew member, typically including shoulder and lap belts, to their sea...
バ
- バイパスピンとは？ A safety locking pin inserted into the nose gear steering system to disable nose wheel steering during towing or pushbac...
- バシネット位置とは？ Approved seat row and attachment point where an aircraft baby bassinet may be installed and locked.
- バックタクシーとは？ Taxiing on a runway in the opposite direction of takeoff or landing.
- バッテリーのみの電源とは？ A condition where the aircraft’s electrical system is operating solely on battery power, typically due to the failure of...
- バランスドフィールド長とは？ Runway length at which accelerate-go and accelerate-stop distances are equal under specified conditions.
- バルクホールドとは？ Small aft or forward lower-deck compartment used for loose bags, live animals, or outsized items not loaded in container...
- バンク休憩時間とは？ A scheduled period during a flight in which a crew member is off duty and resting in a designated bunk or crew rest faci...
- バーティカルナビゲーションとは？ A component of navigation relating to an aircraft's position in the vertical plane (altitude), including climb, cruise, ...
- バードストライクとは？ A collision between an aircraft and one or more birds, often occurring during takeoff or landing and potentially affecti...
パ
- パックとは？ Air conditioning and pressurization units that cool, condition, and regulate the flow of air into the cabin using bleed ...
- パックバルブとは？ A valve that regulates the flow of bleed air into the air conditioning pack.
- パパとは？ The letter 'P' as spoken in the ICAO phonetic alphabet, used in ATC phraseology for the clear identification of taxiways...
- パフォーマンスベースドナビゲーションとは？ A framework for area navigation based on required performance standards for accuracy, integrity, and functionality (ICAO...
- パフォーマンスベースナビゲーション承認とは？ An operational authorisation indicating an aircraft and crew are approved to operate using specific performance-based na...
- パラレルエントリーとは？ A method of entering a holding pattern where the aircraft initially flies outbound parallel to the holding course, then ...
- パラレルオフセットとは？ A specific type of offset in which the aircraft flies a route parallel to the original track, usually by a set number of...
- パワートランスファーユニットとは？ A hydraulic unit that enables power transfer between two separate hydraulic systems without mixing their fluids.
- パワーバック禁止とは？ A restriction prohibiting aircraft from using engine thrust in reverse to move backward from the gate or stand.
- パンパンとは？ A radio call indicating an urgent situation that is not immediately life-threatening.
ビ
- ビジュアルとは？ A term used to describe operations conducted with visual reference to the terrain.
- ビジュアルアプローチ許可とは？ ATC instruction authorizing an aircraft to proceed visually to the airport, maintaining own separation and visual contac...
- ビジュアルセグメントサーフェスとは？ An obstacle‑free area beyond the runway threshold, providing required visual clearance during the final approach segment...
- ビッグデータ分析とは？ The use of advanced computing techniques to analyze vast amounts of operational data, supporting safety, efficiency, and...
- ビーコン点灯とは？ Indicates that the aircraft's anti-collision beacon lights have been switched on, typically prior to engine start, signa...
ピ
- ピトーカバー装着中とは？ Protective pitot-tube cover still fitted, blocking dynamic-pressure input and rendering airspeed indications unreliable.
- ピトー管とは？ A forward-facing tube that measures dynamic air pressure, providing critical input for airspeed indication.
- ピトー管の氷結とは？ Ice formation in the pitot tube, which can obstruct accurate airspeed measurement, potentially leading to unreliable or ...
フ
- ファイナルアプローチとは？ The segment of an instrument approach procedure in which alignment and descent for landing are completed, extending from...
- ファイナルアプローチスピードとは？ The target airspeed maintained by an aircraft during the last segment of the approach for landing, determined by aircraf...
- ファイナルアプローチフィックスとは？ A designated point in an instrument approach from which the final approach segment to the runway begins.
- ファイナル離陸上昇とは？ Climb segment after acceleration and flap retraction up to en‑route climb altitude with one-engine inoperative.
- フェイルオペレーショナルオートランドモードとは？ Autoland logic able to complete flare, touchdown and rollout after any single-component failure below alert height.
- フェイルパッシブオートランドモードとは？ Autoland configuration where a single failure causes autopilot disengage but leaves aircraft in trim, allowing manual la...
- フェリーフライト許可とは？ Authority granted to reposition an aircraft without revenue passengers, often under MEL limitations, to maintenance or d...
- フォックストロットとは？ The letter 'F' as spoken in the ICAO phonetic alphabet, used for taxiway designation, holding points, and callsign clari...
- フォローミーカーとは？ A ground vehicle used to guide arriving or departing aircraft along taxiways or on the apron, especially in low visibili...
- フォーとは？ The ICAO/FAA radiotelephony spelling for the numeral '4'. Used to clearly communicate headings, altitudes, frequencies, ...
- フューチャーエアナビゲーションシステム・ワンアルファとは？ An ICAO standard for data link communications in oceanic and remote airspace; FANS 1/A enables CPDLC and ADS-C functions...
- フライトオグメンテーションコンピュータとは？ A system on Airbus aircraft that provides additional functions such as yaw damping, rudder trim, and flight envelope pro...
- フライトディレクターバーとは？ Visual cues on the Primary Flight Display indicating desired pitch and roll to guide manual flight path.
- フライトデッキWi-Fiネットワークとは？ A secure Wi-Fi network within the cockpit for connecting Electronic Flight Bags, avionics, or crew devices, isolated fro...
- フライトパスベクターとは？ Symbol on HUD or PFD showing instantaneous trajectory of aircraft relative to horizon and runway aiming point.
- フライトマネジメントシステムとは？ An avionics system integrating navigation, performance, and flight planning for automated aircraft operation.
- フライトマネジメントシステムとは？ An integrated avionics system that automates flight planning, navigation, performance, and guidance calculations through...
- フライトモードアナンシエーターの表示を確認せよとは？ Instructs crew to check and confirm that the Flight-Mode Annunciator (FMA) on the Primary Flight Display is showing the ...
- フライトリディスパッチとは？ The in-flight process whereby operational control re-evaluates conditions and issues a new release for the remainder of ...
- フライトレベルとは？ A standardised altitude expressed in hundreds of feet, based on a pressure setting of 1013.2 hPa.
- フライトワーニングコンピュータとは？ A system that processes and displays warnings and cautions to the flight crew in response to abnormal conditions.
- フライト前ブリーフィングとは？ A mandatory operational meeting or exchange held prior to flight, covering crew assignments, weather, NOTAMs, operationa...
- フライ・バイ・ワイヤとは？ An electronic flight control system where pilot inputs are transmitted as electrical signals to computers, which command...
- フラップとは？ Hinged surfaces on the trailing edge of the wing that can be extended to increase lift at lower speeds, used during take...
- フラペロンとは？ A combined flight control surface that functions as both aileron and flap, used on some aircraft to improve control and ...
- フリートキャンペーン指令とは？ Mandatory maintenance or modification order issued by the operator or manufacturer, applicable to an entire fleet.
- フルオーソリティデジタルエンジンコントロールとは？ An electronic system that provides complete automated control of all engine parameters for optimum performance.
- フレアとは？ Landing manoeuvre in which the pilot raises the nose to arrest the descent rate just before touchdown.
- フレックス想定温度とは？ Artificially higher temperature entered in FMS to calculate reduced-thrust take-off setting (flex) within performance li...
- フレックス離陸とは？ Take‑off Using An Assumed Temperature Higher Than Actual To Reduce Thrust And Prolong Engine Life While Meeting Performa...
ブ
- ブラボーとは？ The letter 'B' as spoken in the ICAO phonetic alphabet to ensure clarity in radio communications.
- ブリードエアとは？ High-pressure air extracted from an aircraft engine's compressor stage and used for environmental control, pressurizatio...
- ブリードエア漏れとは？ An unintended escape of high-pressure air from the aircraft bleed air system, which may affect pressurization, anti-ice,...
- ブリードオフ離陸とは？ A take-off performed with engine bleed air turned off to optimize thrust, typically when performance-limited.
- ブリードオーバープレッシャーとは？ A condition where the bleed air pressure exceeds safe limits, causing automatic shutdown or system warnings.
- ブリードトリップとは？ Automatic closure of bleed air supply due to over-temperature or over-pressure, protecting the system from damage.
- ブルー油圧系統とは？ One of three Airbus hydraulic systems, providing redundancy for flight controls, landing gear, and other powered compone...
- ブレーキの過熱とは？ A situation in which the aircraft's braking system exceeds safe operating temperatures, potentially reducing effectivene...
- ブレーキエネルギー限界とは？ The maximum energy that aircraft brakes can safely absorb during landing or rejected takeoff, determined by aircraft wei...
- ブレーキライダーとは？ A qualified person seated in the cockpit of a towed aircraft responsible for applying brakes if necessary during towing ...
- ブレーキ性能報告とは？ Pilot‑reported Assessment Of Actual Aircraft Braking Performance On A Runway Surface.
- ブレーキ摩耗とは？ The condition in which the aircraft’s brake components have undergone material loss due to repeated use, requiring monit...
- ブレーキ温度モニターとは？ A cockpit display or system that monitors the temperature of the main landing-gear brakes to prevent overheating.
- ブレースポジションとは？ A body position adopted by passengers and crew to minimize injury during an imminent impact or emergency landing, as per...
- ブロックタイムとは？ The total elapsed time from when the aircraft first moves under its own power for departure until it finally stops after...
- ブロック燃料とは？ The total quantity of fuel loaded on board the aircraft before engine start, including fuel for taxi, flight, alternate,...
- ブーストポンプとは？ An electrically or hydraulically operated pump used to supply fuel under pressure from tanks to engines, especially duri...
プ
- プッシュバックとは？ The procedure of moving an aircraft rearward from a gate or stand using a tow vehicle, under ground control instructions...
- プッシュバックおよびエンジン始動許可とは？ ATC clearance authorizing an aircraft to begin pushback from the gate and start engines.
- プッシュバックの準備ができましたとは？ A phrase used by pilots to indicate they are prepared for the aircraft to be pushed back from the gate.
- プッシュバックトラクターとは？ A motorized ground vehicle used to push aircraft backwards from the gate or parking position, typically before engine st...
- プッシュバック許可とは？ An air traffic control authorization allowing an aircraft to begin pushback from the gate or stand, typically in coordin...
- プライマリフライトディスプレイとは？ The main instrument display showing attitude, speed, altitude, heading, and flight director information.
- プライマリ・フライト・コンピュータとは？ The Boeing main computer responsible for integrating pilot inputs, aircraft data, and actuating control surfaces.
- プライマリーフライトディスプレイとは？ The main electronic cockpit display providing essential flight information such as attitude, airspeed, altitude, and hea...
- プリスト添加剤とは？ A proprietary fuel system icing inhibitor (FSII) additive, often used in jet fuel to prevent the formation of ice crysta...
- プレコンディションドエアとは？ Air that has been heated or cooled and dehumidified before being supplied to an aircraft on the ground.
ヘ
- ヘッドアップディスプレイとは？ Transparent cockpit display showing critical flight data within the pilot’s forward field of view, reducing the need to ...
- ヘッドセット係員とは？ A ground crew member responsible for direct communication with the flight deck during pushback and engine start via inte...
- ヘディングとは？ The direction in which the aircraft’s nose is pointed, expressed in degrees from magnetic north.
- ヘディング（機首方位）とは？ The direction in which an aircraft’s nose is pointed, expressed in degrees from North. May differ from track due to wind...
ベ
- ベアリング・ディスタンスフィックスとは？ A specified position defined by the intersection of a bearing from a navigation aid and a measured distance, used for fi...
- ベクターとは？ A heading assigned by ATC to an aircraft for navigation or separation purposes, usually stated as 'fly heading…'. Vector...
- ベクター指示を予期せよとは？ An advisory indicating that the pilot should anticipate receiving radar vector instructions from ATC at a specified time...
- ベルトローダーとは？ A motorized vehicle equipped with a conveyor belt for loading and unloading baggage or cargo into aircraft holds.
- ベルト電源オンとは？ Controller or ramp-agent confirmation that the motorised baggage conveyor belt is energised and ready for loading or off...
- ベントパネルとは？ A dedicated panel or port that allows air pressure equalization or controlled venting in fuel tanks or systems, critical...
- ベースに合流せよとは？ Instruction to enter the circuit on the base leg, a perpendicular segment to final approach before landing.
- ベースレッグとは？ The flight path at right angles to the landing runway off its approach end.
- ベータターゲットプロテクションとは？ Flight-laws function holding safe sideslip target during engine-out or crosswind approach to maintain directional contro...
ホ
- ホイッスルとは？ A small signaling device, often attached to lifejackets, used by survivors to attract attention in rescue situations.
- ホットドリンクとは？ Beverages such as tea, coffee, or hot water, served by cabin crew. Handling and service must comply with safety procedur...
- ホットノズルとは？ A component of ground de-icing equipment that delivers heated anti-icing or de-icing fluid under pressure for effective ...
- ホテルとは？ The letter 'H' as spoken in the ICAO phonetic alphabet, used to identify taxiways, holding points, or callsigns in ATC c...
- ホールディングエントリーとは？ The initial maneuver by which an aircraft enters a holding pattern as prescribed, using one of the approved entry proced...
- ホールディングパターンとは？ A racetrack-shaped flight path flown to delay an aircraft's approach.
- ホールディング・フィックスとは？ A specified point, identified by navigation aids or coordinates, at which an aircraft may be instructed to hold.
- ホールディング燃料とは？ The quantity of fuel specifically reserved for holding patterns in case of delays before approach or landing.
- ホールドとは？ To maintain a specific position or altitude, often in a holding pattern.
- ホールドアットとは？ An instruction to maintain a specific position or altitude until further notice.
- ホールドオーバー時間とは？ Estimated time fluid will prevent ice before need for re‑application.
- ホールドパターンとは？ A predetermined maneuver which keeps an aircraft within a specified airspace while awaiting further clearance, typically...
- ホールドラインとは？ A clearly marked line on the surface of an aerodrome, usually at a runway/taxiway intersection, beyond which an aircraft...
ボ
- ボアスコープエンジン検査とは？ A maintenance procedure using a borescope device to visually inspect the internal components of an aircraft engine for d...
- ボンディングケーブルとは？ Flexible conductor that equalises electrical potential between aircraft and refueling equipment to prevent static discha...
- ボーディングブリッジとは？ An enclosed, movable connector that extends from the airport terminal gate to an aircraft door for passenger boarding an...
ポ
- ポイントとは？ The ICAO/FAA radiotelephony word for the decimal mark in frequencies and altitudes, ensuring clarity in transmitting fig...
- ポイント・オブ・ノーリターンとは？ The specific point on the route after which an aircraft does not have sufficient fuel to return to the departure aerodro...
- ポジティブレートとは？ An indication, after takeoff, that the aircraft is climbing and the rate of climb is greater than zero as shown on the v...
マ
- マイクとは？ The letter 'M' as spoken in the ICAO phonetic alphabet, used in ATC communications to designate taxiways, holding points...
- マイクロバーストとは？ A small, intense downdraft producing damaging winds near the ground, hazardous to aircraft during takeoff or landing.
- マガジンラックとは？ Dedicated stowage for in-flight magazines, often at galley or bulkhead area.
- マグネティックコースとは？ The direction of flight over the ground with respect to magnetic north, obtained by correcting true course for magnetic ...
- マスターコーションシステムとは？ A central alerting system that warns the flight crew of abnormal but non-critical system status via lights and aural ton...
- マッハトリムシステムとは？ A system that compensates for Mach tuck by automatically adjusting stabilizer trim at high subsonic speeds.
- マッハ数とは？ The ratio of the true airspeed of an aircraft to the speed of sound under the same atmospheric conditions. Used in ATC f...
- マーカービーコンとは？ A radio transmitter used in the ILS to provide pilots with range information along the approach path, typically located ...
- マーシャラーとは？ A person responsible for providing visual signals to guide aircraft during parking, pushback, or maneuvering on the apro...
ミ
- ミキシングユニットとは？ A component that blends recirculated cabin air with conditioned air from the packs before distribution.
- ミスアプローチとは？ A procedure followed when a landing cannot be completed.
- ミストアプローチとは？ A published procedure to be followed when an instrument approach cannot be completed to a landing due to loss of require...
メ
- メガホンとは？ A battery-powered portable loudspeaker used by crew to issue commands and instructions during evacuation or inoperative ...
- メンテナンスコントロールセンターとは？ Centralized department overseeing aircraft technical status, defect clearance, and authorizing maintenance actions and M...
- メンテナンスチェックフライトとは？ Post-maintenance air test conducted to verify aircraft performance and systems before return to commercial service.
- メーデーとは？ A distress call indicating a life-threatening emergency requiring immediate assistance.
モ
- モニターとは？ Listen on a frequency without establishing two-way communication, maintaining awareness of transmissions
- モンテビデオ代替空港とは？ Carrasco International (SUMU/Montevideo), designated as the alternate aerodrome for flights operating to/from South Atla...
- モードSトランスポンダとは？ An aircraft transponder providing selective, data-rich responses to ATC interrogations, supporting identification and su...
- モードコントロールパネルとは？ The autopilot interface panel allowing pilots to select, arm, or adjust flight modes such as heading, altitude, and vert...
ユ
- ユニットロードデバイスとは？ Unit Load Device — a pallet or container used to load freight, mail, and baggage into aircraft cargo holds, standardized...
- ユニバーサルプリコーションキットとは？ On-board kit with gloves, masks and absorbent agents for safe cleanup of blood or body-fluid spills.
- ユニフォームとは？ The letter 'U' as spoken in the ICAO phonetic alphabet, used in ATC phraseology for taxiways, holding points, or aircraf...
ラ
- ライフベストとは？ Personal flotation device provided to each occupant for use during water ditching or sea evacuation.
- ライフベスト位置とは？ Designated stowage point of each passenger life jacket, usually beneath seat or in central console.
- ライフベスト欠品とは？ Required passenger flotation device absent from its assigned seat location, rendering that position unserviceable until ...
- ライフラインロープとは？ Webbing strap secured to over-wing exits, providing hand-hold for passengers evacuating onto wing during ditching.
- ライムアイシングとは？ The formation of rough, milky, opaque ice due to rapid freezing of supercooled water droplets on aircraft surfaces.
- ライムアイスとは？ A rough, white, opaque ice that forms rapidly from supercooled water droplets freezing on aircraft surfaces, reducing ae...
- ラインアップとは？ An ATC instruction for an aircraft to enter the runway and position itself for take-off, without commencing the take-off...
- ラインオペレーション安全監査とは？ An observational safety program in which trained auditors monitor routine flight operations to identify threats and erro...
- ラジオマグネティックインジケーターとは？ An instrument displaying the aircraft's bearing to selected radio navigation aids, combining magnetic heading and bearin...
- ラダーの完全偏向とは？ A condition in which the rudder deflects fully to one side due to system failure or malfunction, potentially causing sev...
- ラダートリムとは？ A flight-control adjustment that offsets rudder position to maintain coordinated flight and correct for yaw.
- ラテラルナビゲーションとは？ A component of navigation relating to the aircraft's position in the horizontal plane (track), including guidance along ...
- ラテラルナビゲーションおよびバーティカルナビゲーションとは？ A navigation mode providing both horizontal (lateral) and vertical guidance to the aircraft, commonly used in RNAV and R...
- ラバトリースモークアラームとは？ Detector-triggered alert indicating presence of smoke or vapour in aircraft lavatory.
- ラバトリー使用中ランプとは？ Illuminated indicator showing lavatory in-use status to cabin crew and passengers.
- ラムエアインレットとは？ An air intake system that uses forward motion of the aircraft to force external air into ducts for ventilation or pressu...
- ラムエアインレットドア故障とは？ A malfunction where the ram air inlet door fails to open or close properly, affecting ventilation and cooling of avionic...
- ラムエアタービンとは？ A small turbine deployed in flight to provide emergency hydraulic or electrical power using airflow.
- ランディングギアダウンとは？ The position and status indicating the aircraft’s landing gear is fully extended and locked for touchdown and ground ope...
- ランディングギアドアが開いているとは？ A situation where the landing gear doors remain open after gear extension or retraction, indicating a potential malfunct...
- ランディングシステムステータスとは？ Cockpit annunciation indicating availability and health of localizer, glide-slope and autoland monitoring channels.
- ランバックアイスとは？ Ice that forms aft of treated surfaces when anti-icing fluids are overwhelmed by supercooled water running back and free...
- ランプエリアの安全とは？ Operational procedures and regulations ensuring the safe movement and coordination of aircraft, vehicles, and personnel ...
- ランプエージェントとは？ A ground operations staff member responsible for guiding aircraft to and from gates, loading and unloading baggage, and ...
- ランプリーダーとは？ A supervisory ground crew member responsible for coordinating ramp operations and leading a team during aircraft turnaro...
- ランプ重量とは？ The total weight of the aircraft while parked at the ramp, including fuel, payload, and all crew and equipment before en...
リ
- リクライニングロックとは？ Mechanical latch preventing a passenger seat from reclining, used during take-off, landing or when inoperative.
- リサーキュレーションファンとは？ A fan that recirculates cabin air, mixing it with conditioned air to improve efficiency and reduce bleed air demand.
- リデュースドスラストテイクオフとは？ Take-off using less than maximum rated thrust by performance calculation, saving engine life and fuel.
- リファレンス着陸速度とは？ The speed selected as a reference for final approach and landing, often denoted as Vref; used for approach calculations ...
- リマとは？ The letter 'L' as spoken in the ICAO phonetic alphabet, used in ATC communications for taxiway, holding point, or aircra...
- リモートスポットとは？ An aircraft parking stand located away from the terminal building, typically requiring bus transport for passengers.
- リーディングエッジデバイスとは？ A movable aerodynamic surface, such as a slat or Krueger flap, installed on the wing’s leading edge and extended to incr...
- リードバックとは？ A procedure where the receiving station repeats a received message or its pertinent parts to confirm accurate reception.
ル
レ
- レイオーバー（乗務員宿泊）とは？ A scheduled break in a flight crew's duty period, typically involving an overnight stay at a destination before resuming...
- レベルとは？ A generic term used to denote a pilot's cleared vertical position, whether expressed as an altitude, flight level, or he...
- レーダーコンタクトとは？ Indication that a particular aircraft is identified on the radar display and radar flight following will be provided
- レーダーサービス終了とは？ ATC instruction indicating that radar monitoring and associated services are no longer being provided; the pilot must no...
- レーダー誘導とは？ Heading instructions issued to provide navigational guidance by radar
ロ
- ログブック記録とは？ A formal record in the aircraft technical log documenting the status, action, or deferral of an MEL/CDL item for legal a...
- ロメオとは？ The letter 'R' as spoken in the ICAO phonetic alphabet, used in ATC phraseology to identify taxiways, holding points, an...
- ロワーローブとは？ The compartments in the lower fuselage of an aircraft, often used for cargo or, on some aircraft, additional fuel storag...
- ロングレンジクルーズとは？ A cruise speed selected for maximum range per unit of fuel on long-haul flights, balancing fuel efficiency and time.
- ローアプローチとは？ An approach over the runway where the aircraft descends to runway level but does not land, typically followed by a climb...
- ローカライザーとは？ The horizontal guidance component of the ILS, providing lateral alignment with the runway centerline during instrument a...
- ローカライザーとは？ The component of an Instrument Landing System (ILS) that provides lateral guidance to align the aircraft with the runway...
- ローカライザーパフォーマンス・バーチカルガイダンスとは？ An instrument approach procedure (APV) that provides both lateral and vertical guidance using satellite-based augmentati...
- ローター雲とは？ A turbulent, low-level cloud formation found downwind of mountain ranges, forming in the rotor zone beneath and near mou...
- ロードコントロールとは？ Airline or ground-handling department responsible for planning, monitoring and approving aircraft loads, weight and bala...
- ロードシートとは？ Official weight-and-balance document detailing masses, fuel, distribution and calculated centre of gravity for a specifi...
- ロールアウトモードとは？ A mode of the autopilot or autoland system engaged after touchdown, controlling the aircraft's direction and deceleratio...
上
- 上昇して維持せよとは？ Instruction for the aircraft to begin climbing to the stated altitude and maintain that altitude when reached.
- 上昇して～へとは？ An instruction to initiate a climb to a specific altitude and level off upon reaching it, unless otherwise directed.
- 上昇を継続せよとは？ An ATC instruction to maintain or resume climbing to a previously assigned altitude or to a new altitude.
- 上空の風と気温メッセージとは？ A meteorological report providing forecasted wind direction, wind speed, and temperature at specific altitudes above mea...
乗
- 乗務員用ライフベストとは？ High-visibility life jacket with water-activated light issued to each cabin and flight crew member.
- 乗務員用拘束具とは？ Any safety device, including harness or lap belt, designed to secure flight or cabin crew members in their seats during ...
- 乗員による酸素マスクの使用とは？ The action taken by flight crew to don oxygen masks during situations such as smoke, fumes, or cabin depressurization.
- 乗員不具合レポートとは？ Written logbook entry by flight crew describing observed technical defect or malfunction requiring maintenance action.
- 乗員増員とは？ The practice of adding qualified crew members to the flight crew to allow in-flight rest and ensure regulatory complianc...
- 乗客へのアナウンスとは？ Any formal communication delivered to passengers by flight or cabin crew via public address system regarding flight info...
- 乗客ブレース姿勢とは？ Command for passengers to adopt the brace position to minimise injury risk during hard landing or severe turbulence.
- 乗客名簿とは？ An official list of all passengers onboard an aircraft, required by aviation regulations for tracking, safety, and emerg...
- 乗客数とは？ The official total number of passengers on board, verified by cabin crew and reported to the flight deck before departur...
- 乗客用酸素マスクの展開とは？ The automatic or manual release of oxygen masks for passengers in response to cabin depressurization or smoke.
乱
- 乱気流とは？ Irregular motion of the air resulting from eddies and vertical currents, often causing bumpiness or abrupt altitude chan...
- 乱気流とは？ Irregular atmospheric motion caused by eddies and vertical currents, affecting aircraft stability, comfort, and sometime...
- 乱気流手順とは？ A set of operational safety steps followed by flight and cabin crew when turbulence is encountered or anticipated, inclu...
- 乱気流手順とは？ A set of prescribed actions for flight crew to follow when encountering turbulence, including changes in altitude, speed...
乳
- 乳児用シートベルトとは？ Supplementary loop belt attached to adult lap belt to secure an infant on a guardian’s lap during flight.
- 乳児用ベルトとは？ Supplementary loop belt that attaches an infant to an adult’s seat belt during taxi, take-off, landing and turbulence.
- 乳児用ライフベストとは？ Life-jacket sized for infants under 18 kg, equipped with head support, light and tether for water evacuation.
了
- 了解とは？ A standard radiotelephony term meaning 'I have received all of your last transmission'; it does not imply compliance or ...
- 了解とは？ An instruction to confirm that a message has been received and understood.
- 了解、実行しますとは？ A radiotelephony term meaning 'will comply'; it signifies that the message has been received, understood, and will be co...
予
- 予備マスクとは？ Additional oxygen masks stored onboard to supplement the fixed oxygen system for crew or passenger use.
- 予備燃料とは？ The quantity of fuel carried on board in addition to all planned requirements, intended for unforeseen circumstances and...
- 予備計器システムとは？ An independent set of basic flight instruments that provide critical information in case of primary display failure.
- 予報図とは？ A weather chart produced by meteorological authorities that forecasts the expected positions of pressure systems, fronts...
- 予想されるとは？ Used by ATC to advise pilots of anticipated instructions or clearances, such as altitude changes or approach clearances,...
- 予知保全とは？ A maintenance approach using data analytics, sensors, and machine learning to predict equipment failures and schedule re...
代
- 代替ダイバート空港とは？ An airport selected in the flight plan to which an aircraft may proceed when landing at the destination becomes inadvisa...
- 代替ブレーキシステムとは？ A backup braking system used when the primary brake system fails or becomes unavailable.
- 代替ランディングギア展開とは？ A backup method to deploy the landing gear using gravity, hydraulic, or manual means if the normal extension system fail...
- 代替手順必要とは？ Standard operating sequence unavailable; crew must follow officially published alternate or contingency checklist.
- 代替滑走路燃料とは？ The predetermined minimum fuel required at an alternate airport's landing threshold, ensuring safe diversion in case a l...
- 代替着陸空港とは？ An aerodrome specified in the flight plan to which a flight may proceed when a landing at the intended destination becom...
- 代替空港用燃料とは？ The required fuel quantity to fly from the destination airport to a designated alternate airport, including approach and...
- 代替非常口とは？ A secondary or backup emergency exit designated for use when a primary exit is unusable during evacuation.
低
- 低体温毛布とは？ A thermal or space blanket included in survival kits to prevent loss of body heat and treat hypothermia in survivors exp...
- 低圧ローター回転数とは？ Rotational speed of the low-pressure compressor or fan in a jet engine, often indicated as N₁.
- 低気圧とは？ An area of the atmosphere where the pressure is lower than that of the surrounding region, often associated with unsettl...
- 低燃料状態とは？ A condition where the fuel remaining is less than planned final reserve but not yet an emergency.
- 低視程運用とは？ Procedures and requirements for aircraft movements at aerodromes when visibility is reduced below specified minima, incl...
- 低視程運用手順とは？ Aerodrome ground-movement and approach rules activated whenever reported runway visual range falls below published minim...
- 低速離陸中止とは？ A rejected take-off initiated at a speed below V1 due to abnormal indications, system failure, or runway hazard (ICAO Do...
- 低高度ウィンドシアとは？ Wind shear occurring below 2 000 ft AGL, especially hazardous during takeoff and landing phases.
- 低高度飛行域のエリア予報（GAMET）とは？ A GAMET area forecast describing significant weather below FL100 (or FL150 over mountainous terrain) within a FIR, suppo...
使
- 使用可能な着陸距離とは？ Declared length of runway that is available and suitable for the ground run of an aircraft landing.
- 使用可能な離陸滑走距離とは？ Declared length of runway suitable for the ground run of an aircraft taking off, excluding clearway.
- 使用可能な離陸距離とは？ Declared length of runway plus clearway that is available and suitable for the ground run of an aircraft taking off.
保
- 保安区域とは？ A designated zone within an airport or airside area where access is restricted to authorized personnel for security purp...
- 保安検査とは？ An official inspection of an aircraft or passengers by security personnel to ensure no security threats are present.
- 保護呼吸装置欠品とは？ Required PBE smoke-hood absent from crew station or galley, violating safety regulations until replaced.
信
全
- 全圧2番プローブとは？ Sensor measuring total (pitot) pressure at engine station 2 for air data and engine control systems.
- 全地球測位システムとは？ A satellite-based navigation system providing accurate position, velocity, and time information to aircraft and other us...
- 全地球航法衛星システムとは？ A system of satellites providing worldwide navigation, including GPS, GLONASS, Galileo, and BeiDou.
- 全球測位衛星システムスプーフィングとは？ A deliberate electronic attack that manipulates GNSS signals to provide false position or timing data to aircraft, endan...
- 全球測位衛星システム干渉とは？ Any deliberate or accidental disruption of GNSS signals affecting navigation and surveillance for aircraft, including ja...
- 全空気温度プローブとは？ A sensor on the aircraft that measures total air temperature, providing critical input for engine and air-data systems.
再
- 再ディスパッチクリアランスとは？ Official authorization given at a predetermined point, permitting continuation to the planned destination or re-clearanc...
- 再ディスパッチポイントとは？ A designated waypoint or position along the route after which flight dispatch is revalidated or amended based on updated...
- 再ディスパッチ許可とは？ A flight release authorizing a change of destination or continuation beyond a point after departure, subject to operatio...
- 再実施項目とは？ A recurring defect or observation required to be checked, recorded, or repeated at intervals specified in the MEL or log...
出
- 出発の準備ができましたとは？ A phrase used by pilots to indicate they are prepared to begin the takeoff roll.
- 出発不可項目とは？ An inoperative or missing item which, according to MEL or regulatory requirements, prevents the aircraft from being lega...
- 出発制限とは？ Restrictive condition under which an aircraft may be dispatched due to system defect or MEL, affecting allowable operati...
初
加
化
- 化学式酸素発生器とは？ A device that produces oxygen through a chemical reaction, typically used to supply emergency oxygen to passengers via d...
- 化粧室の煙探知とは？ An alert triggered by smoke sensors in the aircraft lavatory indicating possible fire, requiring immediate cabin crew an...
- 化粧室真空システムとは？ Indicates the operational status of the vacuum system in aircraft lavatories, essential for the proper flushing and sani...
北
- 北大西洋トラックとは？ A designated system of daily updated routes for transatlantic flights between Europe and North America, coordinated and ...
- 北大西洋トラックとは？ A published daily route system over the North Atlantic, providing organized and coordinated tracks for transatlantic fli...
- 北太平洋トラックとは？ A designated organized track system for flight operations across the North Pacific between North America and Asia, updat...
可
- 可変スタターベーンとは？ Adjustable compressor guide vanes that control airflow angle and optimize engine efficiency across operating conditions.
- 可変ブリードバルブとは？ Adjustable engine valves that regulate bleed air extraction to maintain compressor stability and prevent stall.
- 可変予備燃料とは？ Additional reserve fuel calculated proportionally to flight time beyond the fixed reserve, for unforeseen delays.
右
合
- 合成ビジョンガイダンスシステムとは？ A cockpit display system that provides pilots with a computer-generated, real-time, 3D depiction of terrain, obstacles, ...
- 合流せよとは？ Instruction to intercept and follow a specified route, airway, arrival procedure, or traffic pattern.
- 合流点シーケンシングとは？ A terminal arrival procedure in which aircraft from different routes are directed to a predefined merge point and sequen...
向
- 向かい風成分とは？ The part of the wind velocity that blows directly against the direction of travel of the aircraft, improving takeoff and...
- 向かい風成分とは？ Wind Blowing Opposite To Aircraft Movement, Increasing Lift And Reducing Required Take‑Off Or Landing Distance.
- 向かい風成分とは？ The component of the wind along the runway axis directed opposite to aircraft’s travel, used for performance calculation...
否
固
国
地
- 地上型補強システムとは？ A system that enhances the accuracy, integrity, and availability of GNSS signals for aviation by providing local ground-...
- 地上支援業務とは？ All services required by an aircraft between landing and take-off, excluding air traffic control services. This includes...
- 地上時間とは？ The total duration an aircraft spends on the ground between landing and takeoff, including taxiing, servicing, and board...
- 地上移動誘導管制システムとは？ A comprehensive system of lighting, signs, and procedures to support safe and efficient aircraft movement on the ground,...
- 地上解析図とは？ A weather chart depicting current meteorological features such as pressure systems, fronts, and precipitation areas at t...
- 地上走行距離とは？ The distance from brake-release or acceleration point to airplane lift-off during take‑off roll.
- 地上電源装置とは？ A mobile or fixed unit that supplies electrical power to an aircraft on the ground when the engines or APU are not runni...
- 地形とは？ The physical features of the land that may pose a hazard to aircraft.
- 地形認識警報とは？ A warning generated by aircraft systems indicating proximity to terrain that may result in controlled flight into terrai...
- 地形認識警報装置とは？ Advanced system alerting pilots of hazardous terrain or obstacles using GPS and a terrain database, supplementing GPWS.
- 地表上とは？ An altitude or height measured with reference to the underlying ground surface directly beneath the aircraft.
- 地表接近警報システムとは？ An onboard system that alerts pilots if the aircraft is in immediate danger of flying into the ground or an obstacle.
- 地表接近警報装置とは？ An aircraft safety system that warns pilots if the aircraft is at risk of controlled flight into terrain or obstacles.
安
- 安全のしおりとは？ Printed passenger safety-instruction card found in every seat pocket, showing required actions and equipment use in an e...
- 安全アラートとは？ A warning issued to alert the pilot of an immediate safety concern.
- 安全デモとは？ A mandatory demonstration by the cabin crew, conducted prior to takeoff, showing passengers the use of safety equipment ...
- 安全デモキットとは？ Standardised set of visual aids and demo seat-belt used by cabin crew to brief passengers on emergency equipment and pro...
- 安全情報カードとは？ Printed card in seat pocket detailing aircraft emergency equipment and evacuation procedures.
- 安全管理システムプロセスとは？ A structured set of procedures within an SMS for identifying, assessing, and mitigating operational safety risks in avia...
定
- 定在性レンズ雲とは？ A smooth, lens-shaped cloud that forms at high altitudes in the crest of mountain waves; often stationary, and indicativ...
- 定時運航率とは？ A metric reflecting the punctuality of flights, indicating whether aircraft departures or arrivals occurred at the sched...
- 定期部品交換とは？ Pre-planned replacement of a part or system component at a specified interval or due time according to maintenance sched...
- 定期部品交換とは？ Pre-planned replacement of an aircraft component at specific intervals in accordance with the maintenance schedule.
- 定速ドライブ装置とは？ A transmission device that converts variable engine speed to a constant speed for generator operation.
客
- 客室乗務員ブリーフィングカードとは？ Card summarising aircraft type-specific emergency duties used during crew pre-flight briefing.
- 客室乗務員用拘束キットとは？ A kit containing handcuffs, tape, and straps for restraining disruptive passengers in accordance with FAA or EASA proced...
- 客室内の気圧とは？ The controlled air pressure within an aircraft cabin, maintained to ensure passenger safety and comfort at altitude.
- 客室安全確認とは？ A safety verification by cabin crew to ensure passengers are seated, seat belts fastened, cabin items stowed, and emerge...
- 客室減圧とは？ A sudden or gradual loss of cabin pressure, requiring immediate response such as emergency descent and oxygen use.
- 客室温度調整とは？ Panel or system regulating passenger-cabin temperature by mixing conditioned bleed air and recirculated flow.
- 客室緊急脱出とは？ An emergency procedure where passengers and crew exit the aircraft rapidly using all available exits, typically initiate...
対
- 対地速度とは？ The speed of an aircraft relative to the surface of the Earth, as measured by navigation systems.
- 対流圏界面とは？ The boundary layer between troposphere and stratosphere, marked by a temperature inversion, affecting flight levels and ...
- 対流圏界面高度とは？ The altitude at which the troposphere ends and the stratosphere begins, critical for flight planning due to temperature ...
巡
- 巡回デッドヘッドとは？ A crew member assigned to reposition as a passenger (not working the flight), who may move between cabins or flights as ...
- 巡航とは？ The phase of flight where the aircraft maintains a steady altitude and speed.
- 巡航とは？ The phase of flight in which the aircraft maintains a steady flight level and speed along the planned route after climb ...
- 巡航上昇とは？ A climb technique where the aircraft climbs at a constant power setting and speed.
- 巡航降下とは？ A descent at a controlled rate while maintaining cruise speed.
- 巡航降下とは？ A gradual descent initiated by the pilot or ATC from cruising altitude, often to optimize fuel burn or prepare for arriv...
左
延
- 延期とは？ A formal process allowing a non-essential inoperative item to be left unrepaired for a specified time under MEL/CDL limi...
- 延期不具合報告とは？ A formal record noting a defect which has been deferred under MEL/CDL procedures, including details of rectification pla...
- 延期処置スイッチとは？ Cockpit switch or placard indicating an MEL-approved deferred maintenance item that must not be activated in flight.
- 延長有効時間とは？ An officially authorized increase in the maximum allowable holdover time beyond standard tables, based on improved weath...
- 延長洋上飛行とは？ Flight operation segment that takes place beyond a specified distance from land, requiring special equipment and regulat...
- 延長航続距離制限とは？ A regulatory or operational constraint that restricts the maximum allowable distance or duration for extended range oper...
強
- 強い乱気流とは？ Turbulence that causes large, abrupt changes in altitude and/or attitude. Aircraft may be momentarily out of control. Oc...
- 強制送還者とは？ A person who is being sent out of a country by legal order and is being transported by air under escort or supervision.
- 強化ビジョンシステムとは？ Onboard system using infrared or millimeter wave cameras to improve pilot visibility of runway, terrain, and obstacles i...
待
必
- 必要なナビゲーション性能とは？ A statement of the navigation performance accuracy necessary for operation within a defined airspace, expressed as a num...
- 必要なナビゲーション性能の認可が必要とは？ A navigation specification for RNAV operations that requires special aircrew and aircraft authorization before use, typi...
- 必要な加速継続距離とは？ Distance needed to accelerate to decision speed, experience an engine failure and continue take-off to 35 ft above runwa...
- 必要な着陸距離とは？ Calculated distance an aircraft needs to land and come to a complete stop under existing conditions.
急
性
慣
- 慣性基準装置とは？ An aircraft system providing position and attitude data by processing gyroscopic and accelerometer inputs.
- 慣性基準装置とは？ A subsystem of an INS providing attitude, position, and velocity reference information for aircraft systems and crew.
- 慣性航法装置とは？ A self-contained navigation system using accelerometers and gyros to compute aircraft position, independent of external ...
- 慣性航法装置とは？ A self-contained navigation system that determines aircraft position and velocity by processing accelerations and rotati...
手
- 手前で待機とは？ An instruction to stop before reaching a specified point, usually a runway or intersection, and not proceed until furthe...
- 手動ブレーキとは？ The act of the flight crew applying the aircraft's wheel brakes by hand or foot, rather than using automatic braking sys...
- 手動ランディングギア展開とは？ The deployment of the aircraft's landing gear using a non-powered, manual backup system in the event of hydraulic or ele...
- 手動リリースツールとは？ Hand-held lever used to mechanically disengage an escape slide or raft from the aircraft door during evacuation or maint...
- 手動位置報告とは？ A position report provided by a flight crew via voice or datalink, specifying current aircraft location, when automatic ...
- 手動膨張ハンドルとは？ Red-coloured T-handle fitted to an escape slide or life-raft. Pulling it opens the gas cylinder to inflate the raft manu...
- 手動膨張ハンドルとは？ Lever or tab used by passenger to manually inflate life vest after evacuation into water.
- 手荷物カートとは？ A vehicle used to transport checked baggage between the aircraft and the terminal during ground handling operations.
拘
推
- 推力レバーをアイドルとは？ Callout or instruction for pilots to move all engine thrust levers to idle, normally at 20–10 ft AGL during Airbus landi...
- 推力開始とは？ Ground instruction for pilots to apply brief higher thrust to overcome static friction and initiate taxi from standstill...
- 推定とは？ A term used by pilots to indicate the estimated time of arrival at a specific point.
搭
携
救
- 救命いかだの使用とは？ The procedure of deploying and utilizing inflatable life rafts by crew and passengers following a water landing, in acco...
- 救命いかだパックとは？ A compact package containing the liferaft and emergency equipment required for survival after ditching, stowed on board ...
- 救急キットとは？ A container holding medical supplies and equipment for treatment of minor injuries or illnesses during flight.
- 救急キットとは？ Regulation medical supplies kit carried on board for treatment of minor injuries and illnesses.
- 救急キットとは？ A collection of supplies and equipment for use in giving first aid in case of minor injuries or medical needs onboard.
- 救急医療キットとは？ Sealed on-board kit containing prescription drugs and advanced medical supplies, used in-flight by qualified personnel f...
- 救難信号発信器（ELT）とは？ A radio beacon that transmits a distress signal to aid search and rescue teams in locating an aircraft in distress or af...
- 救難調整センターとは？ A designated center responsible for organizing and coordinating search and rescue operations in a specified area, as def...
整
斜
是
時
晴
最
- 最低燃料とは？ A declaration by a pilot indicating that the aircraft has enough fuel to reach the destination but no extra fuel for del...
- 最低装備品リストとは？ An approved document listing the minimum equipment required for safe operation of an aircraft, permitting specified inop...
- 最低装備品リスト免除とは？ The operational allowance permitting dispatch or continued operation of an aircraft with certain inoperative items, as l...
- 最大タイヤ速度とは？ The highest ground speed a tire can sustain without risking structural failure, defined by aircraft and tire manufacture...
- 最大ブレーキエネルギー速度とは？ The highest speed from which an aircraft can stop without exceeding the maximum brake energy limit, used to ensure brake...
- 最大実証クロスウィンドとは？ The highest crosswind component at which satisfactory control was demonstrated during aircraft certification flight test...
- 最大連続推力とは？ The highest level of engine thrust that can be used continuously without time limitation under normal operating conditio...
- 最小クリーンスピードとは？ The lowest speed at which an aircraft can fly in a clean configuration without deploying flaps or slats.
- 最小上昇勾配とは？ Lowest climb gradient required to ensure obstacle clearance or meet procedure design criteria.
- 最小装備とは？ The essential items that must be serviceable for an aircraft to be dispatched under the MEL; if not available, flight is...
- 最小装備品リストとは？ An official list of equipment required for safe operation of an aircraft, specifying items which may be inoperative unde...
- 最少燃料とは？ A state where an aircraft’s fuel supply has reached minimum landing level; any additional delay may lead to emergency.
- 最短ターンアラウンド時間とは？ The shortest permissible time required for an aircraft turnaround, defined by airline procedures and airport resources t...
- 最終とは？ The last leg of the approach path before landing.
- 最終進入に参加とは？ An instruction to align the aircraft with the final approach path for landing.
- 最終進入を報告とは？ An instruction for the pilot to inform ATC when the aircraft is on the final approach segment, aligned with the runway c...
- 最適高度とは？ The flight level or altitude that offers the best balance between fuel consumption, aircraft performance, and weather co...
極
構
- 構成逸脱とは？ A formally approved variation from the aircraft’s standard configuration as specified in the Configuration Deviation Lis...
- 構成逸脱リストとは？ An official document specifying permissible aircraft configuration deviations that do not affect safe flight, used for d...
- 構成逸脱リスト項目とは？ An entry in the Configuration Deviation List authorizing dispatch with specific external or configuration deviations, wi...
- 構成逸脱リスト項目とは？ An authorized deviation from aircraft configuration detailed in the Configuration Deviation List, permitting dispatch wi...
標
- 標準ターミナル到着経路とは？ A published IFR route that provides standardized lateral and vertical guidance for arriving aircraft from the en-route s...
- 標準大気温度逓減率とは？ The rate at which temperature decreases with altitude under standard atmospheric conditions, 2 °C per 1000 ft or 6.5 °C ...
- 標準気圧設定（1013 hPa）とは？ The standard sea-level pressure value of 1013.25 hPa (hectopascals) used above transition altitude/level for setting alt...
- 標準計器出発方式とは？ A published IFR departure procedure providing specific routing, altitude, and navigational guidance for departing aircra...
機
- 機内アナウンスシステムとは？ Aircraft Public Address (PA) system, used by flight and cabin crew for delivering announcements, emergency messages, and...
- 機内エンターテインメントシステムとは？ A dedicated electronic system installed in the aircraft cabin, delivering audio, video, and interactive entertainment co...
- 機内サービスとは？ Services provided to passengers during flight, such as meals and beverages, potentially affecting departure or operation...
- 機内ペットとは？ A pet permitted to travel in the aircraft cabin with the passenger, subject to airline policies and operational restrict...
- 機内手荷物とは？ Passenger-carried items stowed in the aircraft cabin, normally in overhead bins or under seats, and subject to weight/si...
- 機内暴力とは？ An incident involving violent, disruptive or aggressive passenger behaviour during flight, endangering safety or order o...
- 機内煙とは？ Presence of smoke in the passenger or flight deck cabin, indicating potential fire requiring immediate attention.
- 機内販売とは？ An onboard retail service offered to passengers, typically involving the sale of duty-free goods during flight.
- 機能テスト必要とは？ Indicates requirement for an operational or systems test to confirm correct function of a repaired or replaced item.
次
気
- 気圧とは？ The atmospheric pressure as measured by a barometer, used to determine altimeter settings and to ensure altitude accurac...
- 気圧高度とは？ The altitude indicated by a barometric altimeter set to the standard pressure setting of 1013.25 hPa or 29.92 inHg. Used...
- 気温逆転とは？ A meteorological condition where temperature increases with altitude instead of decreasing, which can trap pollutants an...
- 気象ドリフトとは？ Deviation from planned track or route due to wind or meteorological factors, often requiring heading or routing adjustme...
- 気象回避とは？ Flight planning or tactical maneuvering to avoid hazardous weather areas using deviation, rerouting, or altitude changes...
- 気象気場報告とは？ Routine coded weather observation for a specific aerodrome at a specific time.
水
- 水上着陸とは？ An intentional or emergency landing of an aircraft on a body of water due to operational necessity or system failure.
- 水上緊急着陸訓練とは？ A procedure practiced by cabin crew and passengers for emergency water landings, including life vest use, brace position...
- 水分汚染深さとは？ Vertical Thickness Of Water, Slush, Or Other Moisture‑Related Contaminants On The Runway Measured In Millimetres For Per...
- 水検知ペーストとは？ A chemical indicator applied to the end of a fuel tank dipstick to detect the presence of water at the bottom of aviatio...
- 水消火器とは？ A portable fire extinguisher filled with water, intended for use on class A (solid material) fires onboard an aircraft.
氷
決
油
- 油圧アキュムレータとは？ A pressurized storage device that maintains hydraulic pressure and absorbs system shocks.
- 油圧システムの故障とは？ A malfunction in the aircraft's hydraulic system, potentially affecting control surfaces, landing gear, or brakes.
- 油圧システム二重喪失とは？ A simultaneous failure of two independent hydraulic systems on an aircraft, significantly degrading control and operatio...
- 油圧ポンプとは？ A device that moves hydraulic fluid under pressure to operate aircraft systems such as landing gear, brakes, and flight ...
- 油圧リザーバーとは？ A tank storing hydraulic fluid for aircraft hydraulic systems, ensuring continuous supply during all phases of operation...
- 油圧圧力損失とは？ A reduction or complete loss of hydraulic system pressure, potentially affecting flight control surfaces, landing gear, ...
- 油圧過熱とは？ A condition in which the aircraft hydraulic system exceeds its normal operating temperature limits, potentially leading ...
- 油圧量低下とは？ Indicates that the fluid level in a hydraulic reservoir is below the specified minimum for safe system operation.
洋
消
混
滑
- 滑走路とは？ A defined rectangular area on a land aerodrome prepared for the landing and takeoff of aircraft.
- 滑走路に進入して待機とは？ An air traffic control instruction for an aircraft to taxi onto the runway and hold in position, awaiting takeoff cleara...
- 滑走路を横断とは？ An instruction authorizing an aircraft to proceed across a specified runway, typically during taxi operations.
- 滑走路を空けましたとは？ Confirmation that the aircraft has exited the runway.
- 滑走路を空けるとは？ An instruction to exit the runway at the nearest suitable exit.
- 滑走路を逆行するとは？ A procedure whereby an aircraft taxis in the opposite direction of take-off or landing on a runway to reach the threshol...
- 滑走路出口とは？ A designated taxiway or exit used by an aircraft to vacate the runway after landing or rejected takeoff.
- 滑走路摩擦とは？ Measurement of friction coefficient between tires and runway; indicates braking performance.
- 滑走路方位を維持してとは？ An instruction to continue on the magnetic heading of the runway after takeoff without turning, usually for departure se...
- 滑走路状態コードとは？ Numeric Value From 0 To 6 Indicating The Braking Action And Surface Condition Of A Runway As Published In A Runway Condi...
- 滑走路状態報告とは？ Aerodrome-issued report of runway surface condition using RCAM and RWYCC.
- 滑走路状態評価マトリックスとは？ A standardized tool used to report runway surface condition for operational decision-making, using runway condition code...
- 滑走路状態評価マトリックスとは？ Standardized Tool Used To Assign Runway Condition Codes Based On Surface Type And Contaminant Characteristics, Supportin...
- 滑走路視程とは？ The distance over which a pilot of an aircraft on the centre line of a runway can see the runway surface markings or lig...
- 滑走路視程とは？ Distance over which runway markings or lights are visible from centreline on approach.
- 滑走路視程七十五メートルとは？ Reported horizontal distance a pilot can see runway markings or lights, measured at 75 metres for CAT IIIB minima.
- 滑走路進入とは？ Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle, or person on the protected area...
- 滑走路逸脱とは？ An incident where an aircraft veers off or overruns the runway surface during take-off or landing.
- 滑走路離脱を報告とは？ An instruction to inform ATC when the aircraft has completely left the runway.
火
- 火山灰ルートとは？ A temporary route planned to avoid areas of volcanic ash, based on current volcanic activity and advisories.
- 火山灰重要気象情報とは？ A SIGMET concerning volcanic ash clouds that may affect en‑route flight safety.
- 火災封じ込めバッグとは？ High-temperature-resistant bag used on board to isolate and contain lithium battery or PED fires until landing.
- 火災検知ループとは？ A continuous sensing circuit that detects overheat or fire in aircraft engines, APU, or cargo bays.
- 火災警報とは？ Automated alert indicating detection of fire or overheat in an aircraft system area, requiring immediate crew action.
無
- 無指向性ビーコンとは？ Low-frequency radio beacon transmitting a non-directional signal that pilots track with an ADF receiver.
- 無指向性無線標識とは？ A ground-based radio transmitter used for navigation, providing direction by reference only.
- 無視するとは？ A phrase used to instruct the pilot to ignore the previous transmission.
煙
熱
燃
- 燃料の不均衡とは？ A condition in which there is a significant difference in the quantity of fuel between the left and right tanks, potenti...
- 燃料の劣化とは？ The process by which stored aviation fuel undergoes chemical changes over time, leading to potential deterioration of qu...
- 燃料カプラーとは？ Mechanical fitting connecting hydrant hose to aircraft or fueling truck manifold.
- 燃料クロスフィードとは？ A procedure that allows fuel to be transferred from one tank to another, typically to correct a fuel imbalance or supply...
- 燃料クロスフローとは？ The procedure or system of transferring fuel between tanks or sides of the aircraft to maintain balance or correct asymm...
- 燃料サンプとは？ A low point or reservoir in an aircraft fuel tank or system where water, debris, and contaminants collect and can be dra...
- 燃料シアカップリングとは？ A safety device in fuel systems designed to disconnect or break under excessive force, preventing fuel spillage and syst...
- 燃料スカベンジとは？ The operation of removing remaining fuel from tanks or lines, especially from areas not emptied by normal fuel pump oper...
- 燃料タンク便とは？ A flight carrying more fuel than required, often to avoid higher fuel costs at destination or for operational contingenc...
- 燃料タンク内立ち入りとは？ The procedure of authorized personnel physically entering an aircraft fuel tank for inspection, cleaning, or maintenance...
- 燃料ドーピングとは？ The process of adding specific chemical additives to aviation fuel to improve its properties, such as preventing microbi...
- 燃料ハイドラントとは？ Fixed valve on apron infrastructure supplying pressurised fuel to hydrant carts or hoses.
- 燃料ハイドラントとは？ An underground fueling system point on the apron where aircraft can be refueled directly through a hydrant instead of fu...
- 燃料パネルとは？ An external aircraft access panel containing controls and connections for fuel loading operations, typically located und...
- 燃料フィルターとは？ A device in the fuel system designed to remove contaminants from aviation fuel before it reaches the engine or fuel syst...
- 燃料ベントとは？ A device or opening that allows vapors and air to escape or enter aircraft fuel tanks to maintain pressure balance and p...
- 燃料不均衡制御とは？ Actions taken to monitor and correct uneven fuel distribution between tanks to maintain safe balance and aircraft handli...
- 燃料凍結点とは？ The lowest temperature at which aviation fuel can remain fluid. If fuel cools below this point, it begins to solidify an...
- 燃料受領書とは？ Document provided by the fuel supplier showing quantity, density, time and place of fuel uplift, signed by the aircraft ...
- 燃料密度とは？ Measured mass per unit volume of fuel, expressed for aviation as kilograms per litre, used for accurate fuel weight calc...
- 燃料抜き取りとは？ The process of removing fuel from an aircraft’s tanks, usually for maintenance, balancing, or to comply with regulatory ...
- 燃料採取とは？ Procedure of drawing a representative fuel sample from tanks or hydrant points to check for water, particulates or other...
- 燃料搭載量とは？ Quantity of fuel added during a refuelling operation, expressed in kilograms, litres or pounds.
- 燃料汚染とは？ Presence of water, biological growth, particulates or other foreign matter in aviation fuel that renders it unserviceabl...
- 燃料温度とは？ The measured temperature of aviation fuel within tanks, lines, or engines. Critical for preventing fuel freezing at alti...
- 燃料温度制限とは？ The minimum or maximum allowable temperature for fuel in aircraft tanks or lines to prevent fuel waxing or freezing, esp...
- 燃料漏れとは？ An unintentional escape of fuel from tanks, lines, or components, posing a safety and fire hazard requiring immediate no...
- 燃料移送とは？ The movement of fuel between tanks to ensure aircraft balance and supply during various flight phases.
- 燃料緊急事態とは？ A condition where an aircraft’s fuel state is such that without immediate landing, safe completion of flight is doubtful...
- 燃料臨界状態とは？ A situation where an aircraft's fuel supply has reached a level where it can only proceed to the intended destination an...
爆
特
- 特別気象報告とは？ An unscheduled aerodrome weather report issued when significant meteorological changes occur between routine METARs.
- 特別認可カテゴリーIIとは？ A precision approach and landing operation using Category II minima that requires special authorisation by the state of ...
- 特別認可カテゴリーIIIとは？ A precision instrument approach and landing operation with the lowest decision heights and runway visual range (RVR), re...
- 特別食とは？ A meal specially requested to meet specific dietary, religious, or medical requirements for individual passengers, to be...
異
- 異常事態チェックリストとは？ A predefined checklist used by pilots to address abnormal but not emergency situations.
- 異常制御モードとは？ A rare fallback flight control law in fly-by-wire aircraft used under severe system failures where no flight envelope pr...
- 異常手順とは？ A specific set of steps followed by pilots to address system malfunctions or unusual situations not classified as emerge...
疲
着
- 着氷とは？ The accumulation of ice on aircraft surfaces due to supercooled water droplets, which can affect aerodynamics and instru...
- 着陸後滑走燃料とは？ Estimated fuel required for taxiing after landing, including clearing runway and reaching gate.
- 着陸時の上昇勾配とは？ Minimum climb performance required during a go-around or missed approach with all engines operating.
- 着陸装置の故障とは？ A failure in the aircraft's landing gear system preventing proper extension or retraction.
- 着陸許可とは？ An air traffic control authorization for an aircraft to land on a specified runway, indicating that the runway is availa...
積
- 積乱雲とは？ Towering vertical cloud with significant turbulence, precipitation, and lightning potential.
- 積雪とは？ The build-up of snow on airport surfaces, aircraft, or equipment, affecting operations, safety, or performance.
- 積雲（高い）とは？ Large cumulus cloud with strong vertical development, indicating convective activity, but not yet cumulonimbus.
空
- 空気スタートユニットとは？ A device used to start an aircraft's engines by supplying high-pressure air.
- 空調パックの遮断とは？ An automatic or commanded shutdown of an air conditioning pack due to overtemperature, overpressure, or system fault, im...
- 空調パック不作動とは？ Indicates a failure of an air-conditioning pack, possibly affecting cabin pressurization and requiring MEL compliance be...
第
- 第1液とは？ The initial de-icing or anti-icing fluid applied to remove contaminants from aircraft surfaces, typically a heated mixtu...
- 第2液とは？ A protective de-icing or anti-icing fluid applied after first fluid, designed to prevent further accumulation of ice or ...
- 第4世代エアグラウンドブロードバンドとは？ A broadband communication system using 4G/LTE technology to provide high-speed data links between aircraft and ground st...
- 第5世代Cバンド接続とは？ A communications system using 5G cellular technology in the C-band spectrum for high-speed, low-latency data transfer to...
等
- 等時点とは？ A calculated position along the planned route where the time required to continue to a suitable alternate aerodrome is t...
- 等時点チャートとは？ A chart used in flight planning to determine the point at which the flight time to two alternate aerodromes is equal, co...
- 等量燃料ポイントとは？ A point along the route where the fuel required to return to the departure airport equals the fuel required to continue ...
管
経
- 経由で出発してくださいとは？ An ATC instruction directing the pilot to follow a specified Standard Instrument Departure (SID) or route after takeoff.
- 経由で進入とは？ An ATC instruction directing an aircraft to follow a specified route, airway, or series of waypoints.
- 経路上代替空港燃料とは？ Fuel required to fly from the destination to an alternate aerodrome en‑route under planned conditions.
緊
- 緊急水上着陸とは？ The controlled emergency landing of an aircraft on water.
- 緊急燃料計画とは？ Calculation of the minimum fuel required to depart from an area with operational hazards to a safe location.
- 緊急降下とは？ A rapid descent by an aircraft in response to an emergency situation.
- 緊急降下とは？ A rapid descent initiated by flight crew in response to a pressurization failure, smoke, or other onboard emergency.
- 緊急降下経路とは？ A predetermined safe vertical and lateral route for rapid descent to a lower altitude in the event of depressurization o...
- 緊急飲料水パックとは？ Sealed potable water container included in life-raft survival kit to supply drinking water for occupants in distress.
翼
- 翼上非常口とは？ Type-III emergency exit situated above the wing, used by able-bodied passengers to evacuate directly onto the wing surfa...
- 翼上非常口の使用とは？ The operation of over-wing emergency exits by passengers or crew during evacuation procedures, usually in the case of la...
- 翼端の間隔とは？ The ensured safe distance between an aircraft’s wingtip and any obstacle, structure, or another aircraft during taxiing ...
耐
- 耐寒保護具とは？ Insulated suit or bag carried in life-rafts to reduce hypothermia risk for survivors awaiting rescue in cold seas.
- 耐火手袋とは？ Specialized protective gloves provided to crew members for handling hot, burning, or smoldering objects during fire emer...
- 耐空性指令記録済みとは？ Mandatory compliance record entered in technical log documenting completion of authority-issued safety directive.
脱
- 脱出スライドの展開とは？ The act of activating and extending the inflatable escape slide on an aircraft to facilitate emergency evacuation.
- 脱出スライド不作動とは？ Inflatable escape slide at an aircraft door unserviceable, precluding passenger carriage until rectified or deferred per...
- 脱出ロープとは？ Heavy-duty rope stowed above cockpit side windows, used for crew self-evacuation when slides unusable.
自
- 自主航法を再開せよとは？ Instruction for the pilot to return to their own pre-filed or previously assigned route after deviation or vectoring.
- 自分の分離を維持するとは？ A phrase used to instruct the pilot to ensure a safe distance from other aircraft without ATC assistance.
- 自動ステップクライムとは？ A flight mode or FMS function that automatically commands step climbs as aircraft weight decreases to optimize fuel effi...
- 自動位置報告とは？ A position report transmitted automatically by onboard avionics via datalink (CPDLC or ADS-C) at predetermined waypoints...
- 自動体外式除細動器とは？ A portable device that analyzes cardiac rhythm and delivers electrical shocks to restore normal heart rhythm during card...
- 自動体外式除細動器とは？ A portable device used to deliver an electric shock to restore normal heart rhythm during sudden cardiac arrest on board...
- 自動従属監視契約とは？ A formal agreement, electronically established between an aircraft and ATC ground station, specifying when position, int...
- 自動従属監視放送とは？ A surveillance technology in which aircraft broadcast position and flight data, allowing real-time tracking by ATC and o...
- 自動従属監視放送アウトとは？ A surveillance technology in which an aircraft automatically broadcasts its position, velocity, and identification deriv...
- 自動従属監視放送インとは？ A surveillance function enabling an aircraft to receive and display ADS-B broadcasts from other aircraft, increasing sit...
- 自動気象観測システム（AWOS）とは？ An unattended station that continuously measures and broadcasts real-time surface weather elements to pilots and ATC on ...
- 自動着陸とは？ A landing performed by the aircraft's autopilot system, typically using ILS signals, requiring minimal pilot input, espe...
- 自動着陸装置とは？ Integrated avionics that guides aircraft from glide-slope capture through flare and rollout without pilot control inputs...
- 自動飛行場情報放送（ATIS）とは？ A continuous broadcast of recorded aerodrome information, including weather, runways and NOTAMs, provided to reduce cont...
航
- 航法フィックスとは？ A specific geographical position determined by visual reference, radio aid, or satellite, used in defining air routes, p...
- 航空交通間隔ツールとは？ A controller support system that calculates optimal spacing between arriving and departing aircraft to maximize runway e...
- 航空機ネットワークセキュリティとは？ Protection of aircraft networks from unauthorized access, cyberattacks, and data breaches, ensuring the integrity of onb...
- 航空路に参加とは？ An instruction to enter and follow a designated airway.
- 航空路を離れるとは？ An instruction to exit a designated airway.
衛
補
- 補助ハンドルとは？ A fixed handhold installed near exits or on evacuation slides to aid crew and passengers in maintaining balance or facil...
- 補助動力装置とは？ A self-contained turbine engine providing electrical and pneumatic power to the aircraft while on the ground or as backu...
- 補助動力装置でのディスパッチとは？ Authorization for a flight to dispatch with the Auxiliary Power Unit (APU) operating or required, usually due to ground ...
- 補助動力装置の火災とは？ A fire involving the auxiliary power unit, typically located in the aircraft's tail, requiring immediate shutdown and fi...
- 補助発電機不作動とは？ Aircraft auxiliary power unit (APU) generator not providing electrical power, requiring external source for ground opera...
要
- 要求されるナビゲーション10とは？ A navigation specification requiring aircraft to maintain a track-keeping accuracy of ±10 nautical miles for at least 95...
- 要求航法性能とは？ A set of precision standards for aircraft navigation accuracy, integrity, and reliability within defined airspace or pro...
- 要求通信性能240とは？ A globally standardized measure for communications capability, latency, and integrity in airspace—‘240’ indicates messag...
視
計
- 計器とは？ A term used to describe operations conducted with reference to instruments.
- 計器着陸装置とは？ A precision approach system providing lateral and vertical guidance to aircraft during landing using radio signals.
- 計器着陸装置とは？ Precision approach aid providing lateral (localizer) and vertical (glide slope) guidance to a runway.
- 計器着陸装置カテゴリーIIIA進入とは？ ILS precision approach with decision height below 100 ft and RVR not less than 200 m; autopilot or HUD guidance required...
- 計器着陸装置カテゴリーIIIB進入とは？ ILS precision autoland with no decision height or below 50 ft and RVR as low as 75 m, requiring fail-operational capabil...
- 計器着陸装置カテゴリーII進入とは？ Precision approach using ILS equipment with decision height not lower than 100 ft and RVR not less than 300 m.
貨
- 貨物ドーリーとは？ A small wheeled platform or trailer used on the ramp to transport ULDs, baggage containers, or cargo pallets between air...
- 貨物パレットとは？ A flat transport structure used as a base for Unit Load Devices (ULDs) or loose cargo, designed to be moved by forklifts...
- 貨物室火災とは？ A detected or suspected fire in the aircraft's cargo hold, requiring immediate fire suppression and emergency procedures...
距
- 距離とは？ The measured space between two points, often in nautical miles in aviation contexts.
- 距離リングとは？ Circular overlays on a navigation display or chart, spaced at regular intervals from a reference point or airport, used ...
- 距離測定とは？ The process of determining distance, often by reference to DME (Distance Measuring Equipment) in ATC phraseology.
- 距離測定装置とは？ An aircraft navigation system providing slant-range distance to a ground station, often paired with VOR or ILS.
- 距離測定装置とは？ Airborne interrogator and ground transponder pair providing slant-range distance to the station in nautical miles.
追
- 追い風成分とは？ The portion of the wind velocity blowing in the same direction as the aircraft's movement or runway orientation, reducin...
- 追い風成分とは？ Wind Blowing In The Same Direction As Aircraft Movement, Reducing Lift And Increasing Required Take‑Off Or Landing Dista...
- 追加（非常用）燃料とは？ The discretionary amount of fuel carried beyond required minimums to address potential delays, weather, or other unfores...
通
速
進
遅
運
- 運用手順とは？ A mandatory action or set of actions required by flight crew to safely operate an aircraft system, especially with an ME...
- 運用最小基準とは？ The lowest meteorological and operational conditions under which an aircraft may be operated, as published by regulatory...
- 運航品質保証とは？ A program for analyzing digital flight data to identify, assess, and mitigate operational safety risks, supporting proac...
- 運航影響ノートとは？ Written record in technical log noting operational effects or limitations resulting from an aircraft defect, MEL, or def...
- 運航空虚重量とは？ The weight of an aircraft including all standard items and operating fluids but excluding payload and usable fuel.
- 運航者最低装備品リストとは？ The MEL approved by the state of the operator, tailored to specific airline operations, listing minimum equipment requir...
遭
遺
部
酸
- 酸素ボトルとは？ A portable or fixed cylinder of pressurized oxygen for supplemental breathing in decompression, smoke, or medical events...
- 酸素マスク自動落下とは？ Automatic deployment of oxygen masks to passengers and crew in the event of a sudden loss of cabin pressure.
- 酸素マスク落下とは？ Automatic or manual release of supplemental oxygen masks from the passenger service unit during cabin depressurisation.
重
- 重大気象情報とは？ A weather advisory issued by a Meteorological Watch Office concerning significant en‑route weather hazards affecting fli...
- 重心移動とは？ Change in the aircraft’s centre of gravity caused by fuel burn, cargo movement or passenger redistribution, potentially ...
- 重心管理とは？ The active process of monitoring and controlling the aircraft’s center of gravity throughout all flight phases to ensure...
- 重要表面とは？ Any aircraft part essential for lift or control, including wings, control surfaces, and stabilizers, which must be clear...
- 重量ペナルティとは？ An increase in operational weight or a reduction in allowable weight imposed due to specific inoperative equipment or co...
長
閉
防
- 防氷とは？ Preventive treatment applied to aircraft surfaces to inhibit the formation of ice during flight or ground operations, us...
- 防氷とは？ Application of fluid to prevent ice formation during ground operations or flight.
- 防氷バルブ故障とは？ Malfunction of wing or engine anti-ice valve preventing hot-air flow, compromising ice protection and requiring flight p...
- 防護呼吸器具とは？ A certified, self-contained smoke hood that provides crew with filtered air for a limited time in the presence of smoke ...
- 防護有効時間とは？ The estimated time anti-icing or de-icing fluid will prevent formation of frost, ice, or snow on the aircraft's critical...
降
- 降下してとは？ An instruction from air traffic control directing an aircraft to decrease altitude to a specified level.
- 降下して維持せよとは？ An instruction to begin descent and level off at the specified altitude, maintaining it until further clearance is issue...
- 降下を継続してくださいとは？ An ATC instruction directing the pilot to maintain the ongoing descent to a specified level or altitude without interrup...
- 降下開始点とは？ The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usu...
- 降機とは？ The controlled process of passengers and crew leaving the aircraft at the end of a flight, following standard operating ...
除
離
- 離脱中とは？ Used by pilots to report they are vacating a specific altitude, either climbing or descending from it.
- 離陸をキャンセルとは？ An instruction to abort the takeoff procedure before the aircraft becomes airborne.
- 離陸中止とは？ To stop the takeoff procedure after it has begun but before the aircraft becomes airborne.
- 離陸中止とは？ A procedure in which a take-off is intentionally aborted by the flight crew after the aircraft has started to roll but b...
- 離陸前滑走燃料とは？ Fuel required for engine start, taxi, and contingencies before take-off.
- 離陸前点検とは？ A required inspection or verification immediately before departure, ensuring that aircraft critical surfaces are free of...
- 離陸安全速度とは？ Target airspeed reached after V2 during take‑off, providing sufficient climb gradient with one engine inoperative.
- 離陸許可とは？ An air traffic control authorization for an aircraft to depart from a specified runway, indicating that the runway is av...
雲
電
- 電子フライトバッグクラス1とは？ A portable, non-mounted device (typically a commercial tablet or laptop) used for flight planning, charts, and manuals, ...
- 電子フライトバッグクラス2とは？ A portable EFB device that may be temporarily connected to aircraft power/data during flight but is stowed after use (FA...
- 電子フライトバッグクラス3とは？ A permanently installed EFB system fully integrated with aircraft power and data, certified as part of aircraft avionics...
- 電子フライトプランとは？ A digitally filed and managed flight plan, submitted electronically to ATC, airlines, and relevant authorities, allowing...
- 電子回路ブレーカーとは？ A digitally controlled switch that protects an electrical circuit from overload by interrupting power supply electronica...
- 電子集中型航空機モニタリングステータスとは？ A system status or advisory displayed on the Electronic Centralised Aircraft Monitoring (ECAM) system, indicating real-t...
- 電子集中航空機モニターとは？ An Airbus system that displays engine, system, and alert messages for aircraft monitoring and troubleshooting.
静
- 静圧口とは？ An external opening on an aircraft that senses ambient atmospheric pressure for use by the pitot-static system.
- 静圧孔の閉塞とは？ An obstruction in the static pressure port of an aircraft, leading to erroneous altitude, airspeed, and vertical speed i...
- 静電ボンドとは？ Earthing connection between aircraft and fuelling equipment used to equalise electrical potential and prevent electrosta...
非
- 非介助動物とは？ An animal on board not trained to assist a person with a disability, such as a pet, requiring specific handling.
- 非周期点検とは？ Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.
- 非定型作業記録とは？ A maintenance log entry documenting unscheduled or unexpected technical issues or discrepancies detected during aircraft...
- 非常口とは？ Any aircraft door, hatch or window designated for passenger evacuation in an emergency situation.
- 非常口列とは？ Row of seats adjacent to an emergency exit, where passengers have responsibilities for assisting in case of evacuation.
- 非常用懐中電灯とは？ Battery-powered flashlight mounted at crew station for use during evacuation or electrical failure.
- 非必須機器および備品とは？ Equipment or furnishings that are not essential for the airworthiness or safety of the flight and may be deferred.
- 非必須機器および備品とは？ Equipment and furnishings that are not required for safe operation or regulatory compliance and may be inoperative witho...
風
飛
- 飛行中の着氷とは？ The buildup of ice on aircraft surfaces during flight due to supercooled water droplets freezing on contact, which can i...
- 飛行中エンジン始動とは？ The procedure of starting an engine during flight, often due to engine flameout or following maintenance.
- 飛行中再計画とは？ Modification of the flight plan while airborne, in response to operational, weather, or airspace constraints.
- 飛行制御油圧回路とは？ Hydraulic circuit dedicated to supplying pressure to flight control surfaces such as ailerons, elevators, and rudder.
- 飛行制御装置の詰まりとは？ A condition in which the aircraft's primary or secondary flight control surfaces become unresponsive or stuck due to mec...
- 飛行場標高とは？ The official elevation of an aerodrome above mean sea level, usually measured at the highest point of the landing area.
飲
- 飲料カートとは？ A service cart used by cabin crew to serve drinks and light refreshments to passengers during the flight, stowed in the ...
- 飲料水サービスとは？ Ground operation involving the refilling of an aircraft’s drinking water tanks with safe, clean, and potable water.
- 飲料水レベルとは？ Indicates the current quantity of drinkable water available in the aircraft's potable water tanks; monitored by cabin or...
- 飲料水レベルとは？ The measured amount of safe, drinkable water stored in dedicated aircraft tanks, monitored for passenger and crew needs ...
高
- 高スループット衛星とは？ A new generation of satellite technology providing much greater data capacity and bandwidth to aircraft for broadband co...
- 高周波データリンクとは？ A long-range communication system enabling digital message exchange between aircraft and ground stations via high-freque...
- 高周波呼び出しとは？ The use of HF radio to establish long-distance communications with ATC, commonly required in remote or oceanic airspace.
- 高周波無線とは？ Radio system operating in the HF band (3–30 MHz), enabling long-distance voice communication between aircraft and ATC.
- 高圧ローター回転数とは？ Rotational speed of the high-pressure compressor or core in a jet engine, commonly indicated as N₂.
- 高層天気図とは？ A meteorological chart depicting wind, temperature, and pressure patterns at specified altitudes above the earth’s surfa...
- 高度とは？ The height of an aircraft above sea level, usually expressed in feet.
- 高度チェックとは？ A request to verify the current altitude of the aircraft.
- 高度制限とは？ A specified altitude that an aircraft must not exceed or descend below.
- 高度制限とは？ A published or assigned restriction that requires an aircraft to cross a specific point at, above, or below a certain al...
- 高度計の標準気圧設定とは？ An altimeter setting based on the standard pressure of 1013.25 hPa or 29.92 inHg, used above the transition altitude. Kn...
- 高度計の海面気圧設定とは？ The altimeter setting that corresponds to the atmospheric pressure at mean sea level. Referred to as QNH in ICAO phraseo...
- 高度計の飛行場標高設定とは？ The altimeter setting that displays the elevation of the aerodrome as the altitude on the altimeter when on the ground. ...
- 高度計を照合せよとは？ Instructs flight crew to independently compare altimeter readings to verify correct setting and altitude indication, ens...
- 高度計セット完了とは？ Confirms that the aircraft's altimeter has been adjusted to the correct barometric pressure setting, as assigned by ATC ...
- 高度計設定とは？ The value to which the scale of a pressure altimeter is set so as to indicate elevation or height. In ATC phraseology, t...
- 高度計設定値とは？ The current local atmospheric pressure value set in an aircraft’s altimeter to ensure correct indication of altitude abo...
- 高気圧とは？ An area of the atmosphere where the pressure is higher than that of the surrounding region, often associated with stable...
- 高積雲カステラヌスとは？ Medium-level turreted cloud with rising towers indicating mid‑level instability, possible precursor to thunderstorms.
- 高緯度航法とは？ Navigation procedures and technologies required for flights operating in polar or near-polar regions, often above 78° la...
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