Fire Protection Flashcards
How many fire detection loops are installed on each engine?
2
How many firex bottles are available for engine fire?
2
What type of Halon is in the engine firex bottles?
1301, pressurized with dry nitrogen
How is an engine fire detected by the crew?
- Appropriate ENG FIRE PUSH switchlight illuminates
- Fire bell sounds
- EICAS warning message
What occurs when the ENG FIRE PUSH switchlight is pushed?
- Fuel SOV closes
- HYD SOV closes
- Bleed air SOV’s close
- Generator de-energized
- Appropriate squibs are armed
How many fire detection loops are inside the APU containment case?
2
How is an APU in-flight fire detected by the crew?
- APU FIRE PUSH switchlight illuminates
- Fire bell sounds
- APU FIRE warning message on EICAS
How many firex bottles for an APU fire?
1
What occurs during an unattended APU fire on the ground?
- APU ECU shuts down APU
- 5 seconds later, APU bottle auto discharges
What occurs during an APU fire in-flight?
- APU ECU shuts down APU
- Crew must discharge the bottle
What are the flight deck indications of cargo smoke?
- Triple chime
- Master warning flashers
- “Smoke” aural
- SMOKE (FWD/AFT) CARGO warning message
- (FWD/AFT) CARGO SMOKE PUSH switchlight illuminates
How many firex bottles are there for cargo smoke?
How do they work?
- 2
- One discharges immediately, the other discharges over 60 minutes
What indications do we have for smoke in the lav’s?
- Triple chime
- Master warning flashers
- SMOKE (FWD/AFT) LAV warning message
What protection do we have for a lavatory waste compartment fire?
Firex bottle with heat-sensitive capsules melts & discharges Halon 1211 directly into waste compartment
