弧线是什么？

弧线 A segment of a circle at a fixed distance from a navigation aid, usually flown as part of a procedure turn, approach, or missed approach using DME or RNAV guidance.

Source: ICAO Doc 9432, FAA PCG

How is “弧线” Used in Practice?

按SAM VOR起始的10海里DME弧线飞行，保持高度直到另行通知。

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

弧线是什么？

A segment of a circle at a fixed distance from a navigation aid, usually flown as part of a procedure turn, approach, or missed approach using DME or RNAV guidance.

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Last updated: March 09, 2026

弧线 是什么？