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Long Haul

Prosedur drift down

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

Prosedur drift down 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 Prosedur drift down?

In this glossary, Prosedur drift down 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 Prosedur drift down used in aviation?

In aviation communication, this term appears in contexts such as: "Mayday, satu mesin mati, memulai Prosedur drift down dari level penerbangan 370 untuk menjaga jarak halangan hingga mencapai level drift down."

Why does Prosedur drift down matter in aviation?

Prosedur drift down 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 Prosedur drift down?

Prosedur drift down is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does Prosedur drift down belong to?

In this glossary, Prosedur drift down 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

Prosedur drift down

Localized example

Mayday, satu mesin mati, memulai Prosedur drift down dari level penerbangan 370 untuk menjaga jarak halangan hingga mencapai level drift down.

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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