Fire Protection System Flashcards
How many fire detection loops are installed on each engine
Two, dual loops mounted in parallel
How many firex bottles are available for an engine fire
Two
What type of Halon is in the engine firex bottles
Halon 1301 pressurized with dry nitrogen
How is an engine fire detected by the crew
Appropriate ENG FIRE PUSH switchlight illuminates, fire bell sounds, and an EICAS warning message.
What occurs when the ENG FIRE PUSH switchlight is pushed
Fuel SOV closes, HYD SOV closes, Bleed air SOVs 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 bell sounds, and an 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 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 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 CARGO warning message, or SMOKE FWD CARGO warning message. Either FWD or AFT CARGO SMOKE PUSH switchlights illuminate
