Question

Pushing the APU FIRE PUSH switchlight causes:

a) Automatic APU shutdown.
b) APU fire extinguisher discharge.
c) Activation of the APU fire detection system.
d) Initiation of APU self-test.

Answer 1

Pushing the APU FIRE PUSH switchlight leads to an automatic shutdown of the Auxiliary Power Unit (APU) as part of emergency procedures to prevent fire spread.

Step-by-step explanation:

Pushing the APU FIRE PUSH switchlight typically causes: a) Automatic APU shutdown. This is a safety feature designed to quickly turn off the Auxiliary Power Unit (APU) in the event of a fire. When activated, this switch will shut down the APU to help prevent the spread of fire and initiate the fire extinguishing process if the aircraft is equipped with an automatic extinguishing system. It is part of the emergency procedures to safeguard the aircraft and its passengers.