Fire Protection & Detection Flashcards
How many ENGINE fire extinguishers are provided?
2 per wing, 4 total
Fire Cargo FWD: pressing the fwd cargo fire ARM switch causes what actions?
-Two packs are automatically shut down
-arms lower cargo compartment fire extinguishers
-configures equipment cooling to override mode and turns off all airflow and heat into lower cargo compartments
-closes master trim air valve
How many fire extinguisher bottles are provided for the forward and aft lower cargo compartments?
4 extinguisher bottles are provided:
Two bottles discharged immediately, other two are metered out after a brief delay, or completely upon touchdown
How many APU fire bottles are provided?
1
What discharges the APU fire extinguisher?
Rotate - discharges APU fire extinguisher into APU compartment
On ground, APU automatically discharged on N408MC-N418MC, N-PA, N475MC-N477MC, N489MC, N492-N499MC, N850GT-N859GT
Can you shutdown the APU from outside the aircraft?
Yes - Right body gear wheel well APU ground control / fire protection panel. Has a stop switch and APU extinguisher discharge switch
Is there smoke detection provided for the crew rest areas?
Yes, installed in crew rest areas, aural warning sounds in crew rest compartment when smoke detected in that compartment
What happens when you push the CARGO FIRE depressurization switch with the MAIN deck fire switch ARMED?
Initiates Airplane Depressurization
Additional Info
-MAIN selected to ARMED-
-Enables main deck fire supression
-Turns off two packs
-Configures equipment cooling to closed loop and turns off all airflow and heat into lower cargo compartments
-closes master trim air valve
What unlocks an engine fire switch?
1.Fire warning
2.Fuel control switch - CUTOFF
3.Pushing the fire override switch
Is the engine fire/overheat detection system a single or dual loop system?
Dual loop;
-A dual loop detector in each nacelle in addition to dual loop overheat detector
-In normal operations both loops in a detector must detect a fire or overheat condition to cause a fire warning or overheat caution unless configured for single loop operation
What does arming the FWD CARGO fire switch do on passenger aircraft?
-Arms cargo fire extinguisher
-Configures equipment cooling to override mode and turns off airflow and heat to forward compartment
-Turns off PACK #3
-Turns off nitrogen generation system
How many fire extinguisher bottles are provided for fire fighting in the FWD and AFT cargo compartments of the 747-8 Aircraft?
6
