Fire Protection Flashcards
How many firex bottles are available for an engine fire?
Two
How many fire detection loops are installed on each engine?
Two, dual loops mounted in parallel
What type of Halon is in the engine firex bottle?
Halon 1301 pressurized with dry nitrogen
How is an engine fire detected by the crew?
Appropriate ENG FIRE PUSH SWITCHLIGHT illuminates,
Fire bells 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 is de-energized and the appropriate squibs are armed
Can we blow both bottles into one engine, if necessary?
Yes
How many fire detection loops are inside the APU containment case?
Two, dual loops mounted in parallel
How is an in-flight APU fire detected by the crew?
APU FIRE PUSH SWITCHLIGHT illuminates
Fire bells sounds
APU FIRE warning message on EICAS
How many firex bottles are available for an APU Fire?
One
What type of extinguishing agent is used in the APU firex bottle?
Halon 1301 pressurized with dry nitrogen
What occurs during an unattended APU fire on the ground?
APU ECU shuts down the APU
5 seconds later, the APU firex bottle will discharge automatically
What occurs during an APU fire in flight?
The APU ECU shuts down the APU
The bottle does not discharge automatically
The crew must discharge the firex bottle
How many smoke detectors are there in the aft cargo compartment?
Two
How many smoke detectors are there in the fwd cargo compartment?
Three
What are the flight deck indications of cargo smoke?
Triple chime Master warning flashers SMOKE aural SMOKE AFT/FWD CARGO warning messages Either AFT or FWD CARGO SMOKE PUSH SWITCHLIGHTs illuminated
How many firex bottles are there for cargo smoke?
Two
One is a slow metered standard bottle that should last approximately
60 minutes
The other bottle is a quicks discharge bottle
How many smoke smoke detectors are located in the lav’s?
Two,
One in fwd
One in aft
What indication 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 LAV waste compartment fire?
A firex bottle with heat sensitive capsules that will melt to discharge
Halon 1301 directly into the waste compartment
What indication will we get with a waste compartment fire?
None, unless it generates enough smoke to set off a smoke detector
