Fire Protection Flashcards
The engines and APU each have a fire and overheat detection system consisting of:
Two detection loops in parallel
A Fire Detection Unit
Each squib has a —— electric supply.
Dual
Each engine has —- fire extinguisher bottles
Two
The APU has —- Fire extinguisher bottle
One
DISCH comes on amber in the AGENT 1(2) PB when the corresponding fire bottle
has lost pressure
The red APU fire light comes on and an external horn sounds when
The system detects an APU fire
The APU fire light goes out when
The fire has been extinguished
The APU fire extinguisher discharges automatically
3 seconds after the appearance of the fire warning
The APU shut off PB shutdown sequence is the same as the APU shutdown automatic sequence except for
There is no cool down cycle
One smoke detector is located within the air extraction duct of the
avionics ventilation system
An automatic fire extinguisher system is located within
Each lavatory waste bin
The forward and aft cargo compartment smoke detection system consists of
Two smoke detectors within the forward cargo compartment ceiling panel cavities.
Four smoke detectors within the aft cargo compartment ceiling panel cavities.
A Smoke Detection Control Unit
Smoke in one cavity activates the cargo smoke warning if:
Two detectors sense smoke.
One detector detects smoke and the other detector is inoperative
The DISCH 2 light comes on to indicate to the crew that they have to discharge agent 2 — minutes after the discharge of agent 1
60
Cargo bottle 1 discharges in approximately
60 seconds
