Flight Phase

Acceleration altitude

The specified altitude after take-off at which an aircraft transitions from take-off power and climb profile to acceleration and flap retraction, as defined in the departure procedure.

Quick answer: The specified altitude after take-off at which an aircraft transitions from take-off power and climb profile to acceleration and flap retraction, as defined in the departure procedure.

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Quick answer

The specified altitude after take-off at which an aircraft transitions from take-off power and climb profile to acceleration and flap retraction, as defined in the departure procedure.

Why it matters

Acceleration altitude 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 Acceleration altitude?

In this glossary, Acceleration altitude refers to: The specified altitude after take-off at which an aircraft transitions from take-off power and climb profile to acceleration and flap retraction, as defined in the departure procedure.

How is Acceleration altitude used in aviation?

In aviation communication, this term appears in contexts such as: "At acceleration altitude, increase speed, retract flaps on schedule, and reduce to climb power."

Why does Acceleration altitude matter in aviation?

Acceleration altitude 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 Acceleration altitude?

Acceleration altitude is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does Acceleration altitude belong to?

In this glossary, Acceleration altitude 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 specified altitude after take-off at which an aircraft transitions from take-off power and climb profile to acceleration and flap retraction, as defined in the departure procedure.

Operational example

At acceleration altitude, increase speed, retract flaps on schedule, and reduce to climb power.

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

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