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FIRE PROTECTION CARGO COMPARTMENTS AND AIRFRAME [email_address]

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FIRE PROTECTION SYSTEM DOOR 5 CREW REST Dual Loop Smoke detection

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DOOR 5 SMOKE DETECTION DOOR 5 CREW REST SMOKE DETECTION PANEL Located at top of ladder to rest area

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DOOR 5 SMOKE DETECTION Message alerts crew of smoke in compartment. Requires an attendant to check compartment for fire. SMOKE DR 5 REST RESET BUTTON Restores air-conditioning / recirculation system

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FIRE PROTECTION SYSTEM LAVATORIES Smoke detection Fire detection Fire Extinguishing

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LAVATORY SMOKE DETECTION Not all aircraft. >SMOKE LAVATORY

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FIRE PROTECTION SYSTEM WHEEL WELL Single loop Fire detection

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FIRE PROTECTION SYSTEM PNEUMATIC Overheat detection Wing leading edges and fuselage pneumatic duct protected by thermal switches.

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OVERHEAT DETECTION BLD DUCT LEAK (L,C,R) OVHT ENG 1 NAC APU DUCT LEAK NOTE: Status message only. Will cause APU to shut down and it can not be restarted until maintenance action is taken.

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WHEEL WELL FIRE INDICATION FIRE WHEEL WELL Single loop fire detector routed through all 4 wheel wells If a fire is detected the fire bell sounds and EICAS message displays.

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FIRE PROTECTION SYSTEM CARGO COMPARTMENT Smoke detection Fire Extinguishing

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CARGO FIRE PROTECTION FIRE CARGO FWD ARMED ARMED FIRE CARGO AFT DISCH DISCHARGE SWITCH DISCH – Pushed will discharge extinguishing agent to the armed cargo compartment and provide 215 min of suppression. FIRE CARGO ARMED SWITCHES FWD/AFT – Red indicates Fire in related cargo compartment ARMED –The extinguishing system for selected compartment is armed. The equipment cooling system configured to OVRD mode. Pack #3 and all fans are shut off.

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CARGO FIRE PROTECTION >CGO BTL DISCH DISCH ARMED A FIRE EXT FWD AFT B FIRE EXT C FIRE EXT D FIRE EXT SQUIB REGULATOR After 30 Min’s or on landing. Bottles C & D discharge through regulators giving a maximum hold over time of 215 Min’s. Pushing DISCH SW fires squibs in bottles A &B into selected compartment.

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CARGO SMOKE DETECTION FWD ARMED A A B B A AND B EJECTOR PUMP CENTER PNEUMATIC MANIFOLD Each cargo compartment has 2 zones. Each zone has 2 dual loop smoke detectors. Smoke detector air is drawn from the cargo compartment by an ejector pump. The air source for the ejector pump is the centre pneumatic manifold. Both loop in a smoke detector must detect smoke to generate a fire warning.

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CARGO SMOKE DETECTION FWD ARMED A A B B A DETECTOR FAILED EJECTOR PUMP >CARGO DET AIR Or failure of ejector pump or no air pressure in center pneumatic manifold CENTER PNEUMATIC MANIFOLD System can reconfigure to single loop operation if a single loop is detected as failed

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ENG FIRE PROTECTION TESTING FIRE ENG 1 FIRE ENG 2 FIRE ENG 3 FIRE ENG 4 PUSH “ENG” Tests the turbine overheat system

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ENG FIRE PROTECTION TESTING FIRE TEST IN PROG PUSH “ENG/APU CARGO” Tests the entire system INCLUDING APU FIRE HORN

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ENG FIRE PROTECTION TESTING PUSH “ENG/APU CARGO” Tests the entire system >FIRE TEST PASS >FIRE TEST FAIL FIRE TEST FAIL WILL GENERATE STATUS MESSAGE.