What is Drift down?
Drift down A procedure for descending to a safe altitude following engine failure at cruise. Aircraft descends along a planned path ensuring obstacle clearance and safe flight.
Source: ICAO Doc 9432, FAA PCG
How is “Drift down” Used in Practice?
Due engine failure, we are initiating drift down from flight level three five zero to maintain obstacle clearance.
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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What is Drift down?
A procedure for descending to a safe altitude following engine failure at cruise. Aircraft descends along a planned path ensuring obstacle clearance and safe flight.
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