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Flight Phase

下降顶点

The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.

Quick answer: The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.

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Quick answer

The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.

Why it matters

下降顶点 matters because it supports clear communication in Flight Phase 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 下降顶点?

In this glossary, 下降顶点 refers to: The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.

How is 下降顶点 used in aviation?

In aviation communication, this term appears in contexts such as: "飞行员：我们已到达下降顶点，开始下降到180高度层，已获批准。"

Why does 下降顶点 matter in aviation?

下降顶点 matters because it supports clear communication in Flight Phase 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 下降顶点?

下降顶点 is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does 下降顶点 belong to?

In this glossary, 下降顶点 is grouped under Flight Phase. 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

The calculated point during cruise at which an aircraft initiates descent from cruising altitude toward destination, usually determined by onboard flight management systems.

Operational example

Pilot: We have reached top of descent, commencing descent to flight level one eight zero as cleared.

Localized term

下降顶点

Localized example

飞行员：我们已到达下降顶点，开始下降到180高度层，已获批准。

Definition language

English reference definition

Source

ICAO Doc 9432, FAA PCG

Category

Flight Phase

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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