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Long Haul

双发延程运行

Operation of twin-engine aircraft on routes where a diversion airport may be more than 60 minutes away at one-engine inoperative cruise speed, subject to special performance and dispatch requirements (ETOPS).

Quick answer: Operation of twin-engine aircraft on routes where a diversion airport may be more than 60 minutes away at one-engine inoperative cruise speed, subject to special performance and dispatch requirements (ETOPS).

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Quick answer

Operation of twin-engine aircraft on routes where a diversion airport may be more than 60 minutes away at one-engine inoperative cruise speed, subject to special performance and dispatch requirements (ETOPS).

Why it matters

双发延程运行 matters because it supports clear communication in Long Haul contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Editorial context

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Questions and answers

Questions and answers

What is 双发延程运行?

In this glossary, 双发延程运行 refers to: Operation of twin-engine aircraft on routes where a diversion airport may be more than 60 minutes away at one-engine inoperative cruise speed, subject to special performance and dispatch requirements (ETOPS).

How is 双发延程运行 used in aviation?

In aviation communication, this term appears in contexts such as: "中心台，ABN123 在 DOGGO 进入双发延程运行区段，燃油检查完毕，请求太平洋跨越的位置信息。"

Why does 双发延程运行 matter in aviation?

双发延程运行 matters because it supports clear communication in Long Haul contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Who uses 双发延程运行?

双发延程运行 is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does 双发延程运行 belong to?

In this glossary, 双发延程运行 is grouped under Long Haul. Related pages in this category explain adjacent procedures, commands and operational concepts.

Where does this definition come from?

This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.

Definition

Operation of twin-engine aircraft on routes where a diversion airport may be more than 60 minutes away at one-engine inoperative cruise speed, subject to special performance and dispatch requirements (ETOPS).

Operational example

Center, ABN123 confirms Extended Twin Operations segment entry at DOGGO, fuel check complete, requesting position report for the Pacific crossing.

Localized term

双发延程运行

Localized example

中心台，ABN123 在 DOGGO 进入双发延程运行区段，燃油检查完毕，请求太平洋跨越的位置信息。

Definition language

English reference definition

Source

ICAO Doc 9432, FAA PCG

Category

Long Haul

Exam relevance

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

Target audience

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related terms

Use the related links below to continue through connected aviation terminology.

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