Term
| What unlocks an engine fire switch? |
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Definition
Fire warning
Fuel control switch in CUTOFF
Pushing the Fire Override switch |
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Term
| What occurs when an engine fire switch is pulled? |
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Definition
Closes engine and spar valves
Closes engine bleed air valve
Trips engine generator
Shuts off hyd fluid to the EDP
Depressurizes EDP
Arms both fire extinguishers |
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Term
| What occurs when the APU fire switch is pulled? |
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Definition
Arms APU fire extinguisher
Closes APU fuel valve
Closes APU bleed air valve
Closes APU inlet door
Trips APU generator
Shuts down APU (if no auto-shutdown) |
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Term
| What action discharges the fire extinguisher, for an engine/or APU? |
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Definition
Rotating the engine fire switch or the APU fire switch
APU extinguisher automatically discharges on the ground |
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Term
| What happens when you push the main deck Cargo Fire Arm switch? |
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Definition
Enables main deck fire suppression
Turns off two packs
Configures equipment cooling to closed loop
Turns off all airflow to main deck
Turns off all airflow and heat into lower compartments
Closes master trim air valve |
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Term
| What happens when you push the CARGO FIRE Depressurization switch with the MAIN deck fire switch ARMED? |
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Definition
| Initiates airplane depressurization to slightly below airplane altitude |
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Term
| State the actions that occur when you push a FWD or AFT Cargo Fire Arm switch |
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Definition
Turns off two packs
Arms lower cargo compartment fire extinguishers
Configures equipment cooling to override mode
Turns off all airflow and heat into lower cargo compartments
Closes master trim air valve |
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Term
| What happens when you push the CARGO FIRE Depressurization switch with the forward/aft fire switch ARMED? |
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Definition
2 bottles discharge immediately
2 bottles discharge after a brief delay or upon touchdown
Provides 210 minutes of effective agent concentration |
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Term
| How many fire bottles are on the aircraft? |
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Definition
Engines: 4 total, 2 on each wing
APU: One
Fwd/aft cargo: 4 |
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Term
| How many fire loops are in the engines and how do they function? |
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Definition
Dual loop fire detector in each engine nacelle
Dual loop overheat detector in each engine
Both loops must detect a fire/overheat ("and" system) |
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Term
| How many fire loops are in the APU and how do they function? |
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Definition
Dual loop fire detector in the APU compartment
No overheat detection
Either loop detects a fire, which also shuts down the APU
("or" system)
Either loop detecting a fire on the ground discharges the APU fire extinguisher bottle |
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Term
| Where is the APU Ground Control Fire Protection Panel? What switches are on it? |
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Definition
Right body gear well
APU fire warning horn
Stop, Fire Control and Extinguisher Discharge switches |
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Term
| How many fire loops are in the cargo compartments and how do they function? |
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Definition
4 dual loop detectors in forward and aft lower lobes
16 dual loop detectors on main deck
Sample air is drawn through the detectors by center bleed duct air
Both loops must sense smoke ("and" system) |
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Term
| How do the forward and aft cargo compartment fire bottles operate? |
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Definition
| Pushing the Cargo Fire Discharge switch discharges 2 bottles immediately, remaining 2 discharge after a brief delay or upon touchdown |
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Term
| How does main deck cargo compartment suppression work? |
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Definition
Pushing the Main Deck Cargo Fire Arm switch configures equipment cooling to closed loop, turns off two packs and airflow to all cargo compartments
Pushing the Cargo Depress/Disch switch opens the outflow valves |
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Term
| How many fire loops are in the wheel wells? |
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Definition
| Single loop detector in each main gear wheel well |
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Term
What type of fire detection/protection is in the lavatories?
Crew rest areas? |
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Definition
Lavatories: smoke detectors and automatic fire extinguisher in waste compartment
Crew rest: smoke detectors, aural warning |
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Term
| What happens if a fault occurs in one loop upon completion of any fire and overheat fault test? |
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Definition
| The system reconfigures for single loop operation |
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