A 'hung start' is the failure of an engine to accelerate to its normal idle speed. It may be caused by:

Question

Question ATPL - Airline Transport Pilot license - Aircraft General Knowledge - Airframe, Systems, Powerplant

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An attempt to ignite the fuel before the engine has been accelerated sufficiently by the starter.

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Compressor Surging.

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The starter cutting out early in the starting sequence before the engine has accelerated to the required rpm for ignition.

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Failure Of The Fuel To Ignite In The Starting Sequence After The Engine Has Been Accelerated To The Required Rpm By The Starter.

Id 624 - ATPL - A 'hung start' is the failure of an engine to accelerate to its normal idle speed. It may be caused by: