Aviation English
Flight Phase

เลขมัค คืออะไร?

เลขมัค The ratio of the true airspeed of an aircraft to the speed of sound under the same atmospheric conditions. Used in ATC for speed assignments and reporting in high-speed flight.

Source: ICAO Doc 9432, FAA PCG

How is “เลขมัค” Used in Practice?

รักษา Mach 0.80 หรือมากกว่า แจ้งหากทำไม่ได้เนื่องจากความปั่นป่วนหรือข้อจำกัด

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

เลขมัค คืออะไร?

The ratio of the true airspeed of an aircraft to the speed of sound under the same atmospheric conditions. Used in ATC for speed assignments and reporting in high-speed flight.

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