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Long Haul

等时图

A chart used in flight planning to determine the point at which the flight time to two alternate aerodromes is equal, commonly applied for ETOPS and long-range operations.

Quick answer: A chart used in flight planning to determine the point at which the flight time to two alternate aerodromes is equal, commonly applied for ETOPS and long-range operations.

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Quick answer

A chart used in flight planning to determine the point at which the flight time to two alternate aerodromes is equal, commonly applied for ETOPS and long-range operations.

Why it matters

等时图 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 等时图?

In this glossary, 等时图 refers to: A chart used in flight planning to determine the point at which the flight time to two alternate aerodromes is equal, commonly applied for ETOPS and long-range operations.

How is 等时图 used in aviation?

In aviation communication, this term appears in contexts such as: "根据等时图，ETP位于Shannon和Gander之间45北030西航路点上。"

Why does 等时图 matter in aviation?

等时图 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 等时图?

等时图 is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does 等时图 belong to?

In this glossary, 等时图 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

A chart used in flight planning to determine the point at which the flight time to two alternate aerodromes is equal, commonly applied for ETOPS and long-range operations.

Operational example

According to the equal time chart, ETP is located over waypoint 45 North 030 West between Shannon and Gander.

Localized term

等时图

Localized example

根据等时图，ETP位于Shannon和Gander之间45北030西航路点上。

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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