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Flight Phase

降下開始点

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

降下開始点 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 降下開始点?

In this glossary, 降下開始点 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 降下開始点 used in aviation?

In aviation communication, this term appears in contexts such as: "パイロット：降下開始点に到達しました。クリアされた180へ降下を開始します。"

Why does 降下開始点 matter in aviation?

降下開始点 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 降下開始点?

降下開始点 is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does 降下開始点 belong to?

In this glossary, 降下開始点 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

降下開始点

Localized example

パイロット：降下開始点に到達しました。クリアされた180へ降下を開始します。

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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