26. Fire Protection Flashcards
What happens when both Fire Detection loops fail?
After 5 seconds, they will trigger the fire alarm
How many Halon bottle are there?
2 per engine, 1 for APU, 1 shared for all cargo holds, 1 in the lavatory waste bin (auto and non-alerting)
How many smoke detector cavities are in the cargo holds?
1 forward, 2 aft (321 has 3 aft)
When will the detector’s trip?
When both loops indicate a fire or one loops detects and the other is inop
Where is the avionics smoke detector?
Air extraction duct
What does the ENG FIRE button do?
Silence aural warning Arms squibs Closes hydraulic fire shut off valve Closes low-press fuel valve Deactivates the IDG Closes the pack flow control valve Closes the engine bleed valve Cuts off FADEC power
What does the GEN 1 LINE pb do?
During an avionics smoke detection, it will:
Disconnect generator 1 from electrical system
EXCEPT will continue to power one fuel pump in each wing tank
What is the CAB FAN?
Cockpit/cabin recirculation fan. Turned off during aviaoinics smoke detection
When you are complete with shutting down both engines, what remaining systems will the battery power?
VHF 1 and the PA
How long does it take to discharge the cargo hold Halon?
60 seconds, remember the smoke lights will remain on for the rest of the flight because the hold is full of Halon particles
