The pilot may be prevented from retracting the landing gear whilst the aircraft is on the ground by:

Question

ATPL - Airline Transport Pilot license - Aircraft General Knowledge - Airframe, Systems, Powerplant - The pilot may be prevented from retracting the landing gear whilst the aircraft is on the ground by:

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The electrical control system being routed through the weight on wheels switch.

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A Guard On The Selector Switch Which Cannot Be Moved Until The Aircraft Is Airborne.

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A pneumatic interlock which disables the hydraulic up selector.

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Any Attempt To Select The Landing Gear Up Will Result In A Flashing Warning Light And A Loud Horn.

ATPL: The pilot may be prevented from retracting the landing gear whilst the aircraft is on the ground by:

Domanda 354, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license