What is auxiliary power unit?
auxiliary power unit A self-contained turbine engine providing electrical and pneumatic power to the aircraft while on the ground or as backup in flight.
Source: ICAO Doc 9432, FAA PCG
How is “auxiliary power unit” Used in Practice?
Auxiliary power unit will supply electrical power during engine start and ground operations.
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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What is auxiliary power unit?
A self-contained turbine engine providing electrical and pneumatic power to the aircraft while on the ground or as backup in flight.
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