Fire Protection

Question 1

Pulling an engine fire switch:

Answer 1

(3 electric, 2 fluid, 1 air)

Arms both extinguishers,
Trips associated engine generator, removes power to thrust reverser isolation valve

Closes associated engine and spar fuel valves, depressurizes/shuts off fluid to associated engine-driven hydraulic pump

Closes associated engine anti-ice valve

Question 2

APU fire switch

Answer 2

Arms extinguisher
Trips generator field and breaker
Closes APU fuel valve
Closes air inlet door
Shuts down APU (if auto shutdown does not occur)