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Long Haul

Procédure de descente en dérive

A contingency descent profile followed after an engine failure at cruise altitude to achieve the aircraft’s new single-engine ceiling while maintaining obstacle clearance.

Quick answer: A contingency descent profile followed after an engine failure at cruise altitude to achieve the aircraft’s new single-engine ceiling while maintaining obstacle clearance.

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Quick answer

A contingency descent profile followed after an engine failure at cruise altitude to achieve the aircraft’s new single-engine ceiling while maintaining obstacle clearance.

Why it matters

Procédure de descente en dérive 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 Procédure de descente en dérive?

In this glossary, Procédure de descente en dérive refers to: A contingency descent profile followed after an engine failure at cruise altitude to achieve the aircraft’s new single-engine ceiling while maintaining obstacle clearance.

How is Procédure de descente en dérive used in aviation?

In aviation communication, this term appears in contexts such as: "Mayday, un moteur coupé, j'amorce la Procédure de descente en dérive du niveau 370 pour conserver la marge d'obstacles jusqu'au niveau dérivé."

Why does Procédure de descente en dérive matter in aviation?

Procédure de descente en dérive 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 Procédure de descente en dérive?

Procédure de descente en dérive is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does Procédure de descente en dérive belong to?

In this glossary, Procédure de descente en dérive 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 contingency descent profile followed after an engine failure at cruise altitude to achieve the aircraft’s new single-engine ceiling while maintaining obstacle clearance.

Operational example

Mayday, one engine out, commencing Drift Down Procedure from flight level three-seven-zero to maintain obstacle clearance until drift-down level reached.

Localized term

Procédure de descente en dérive

Localized example

Mayday, un moteur coupé, j'amorce la Procédure de descente en dérive du niveau 370 pour conserver la marge d'obstacles jusqu'au niveau dérivé.

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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