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10 Cards in this Set
- Front
- Back
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Fire bottles |
2 Firex bottles ea. engine (aft of firewall) 1 bottle APU (outside fire zone) 2 bottles cargo compartment
Hot Batt Bus pwrd
Thermal discharge disc Green = normal Red = press relief blown AGN = bottle capacity |
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Detection |
Essential bus powered Electrical firewire sensor cable - 2 conductors separated by eutectic salt, dec in resistance as temp inc - dec blw limit warning in cockpit |
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Cable break |
Single break = doesn't impair warning 2+ break = any section btwn breaks no function - on test: no Fire Button illum, only LOOP FAIL LOOP FAIL = short circuit in fire detection control loop |
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Fire/overheat Control Unit |
1 ea engine, 1 APU, 1 cargo
2 separate alarm circuits discriminate btwn valid fire & fault indication (cable short in circuit) - compare resistance change in sensing cable |
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Fire buttons (engines - FFBIGSAM) |
Feather solenoid Fuel SOV Bleed air SOV Ignition (auto) off Generator (DC) off Squib armed Afx (good engine) inhibited Motive flow valve closed |
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Fire buttons (APU) |
APU shutdown APU bleed air SOV Fuel SOV APU DC Gen off APU squib armed |
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FE & PBE |
3 ea w/in 3m of each other
PBE= endurance 15mins - will fog & deflate when KO2 canister exhausted - remove
- flight deck step stowage - under FA seat - fwrd galley bulkhead |
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Waste bin (lav) fire bottle |
Wax squib melts (78C), firex discharge = LAV FIRE (RWP) |
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Cargo detection/protection |
Smoke detector w/ temp sensor (85C)
1. CARGO FIRE (RWP) 2. Cargo 'fire' switch 3. Red "WARNING" light 4. Triple chime
Pushing green Cargo squib fires 2 bottles 1. High rate (discharge < 2secs) 2. Metered bottle discharge 1hr
DIS light = agent discharged |
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DIS light |
= low pressure, either
1. Squib fired 2. Bottle leak 3. Thermal dischange |
