Fire Protection 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 bottle?
Halon 1301 pressurized with dry nitrogen
How is the engine fire detected by the crew?
Appropriate ENG FIRE PUSH switch/light illuminates
Fire bell sounds
EICAS warning message
What occurs when the ENG FIRE PUSH switch/light is pushed?
Fuel SOV closes HYD SOV closes Bleed air SOVs close Generator is de-energized 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 switch/light illuminates
Fire bell 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 by nitrogen
What occurs during an unattended APU fire on the ground?
APU ECU shuts down the APU APU FIRE switch/light illuminates Fire bell sounds APU FIRE warning message on EICAS 5 seconds later APU bottle will discharge automatically
What occurs during an APU fire in flight?
APU ECU shuts down the APU
APU FIRE switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS
How many smoke detectors are there in the aft cargo compartment?
Two
How many smoke detectors are 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 message Either FWD or AFT CARGO SMOKE PUSH switch/lights illuminate
How many firex bottles are there for cargo smoke?
Two:
Slow metered standard bottle released over approximately 60 minutes
and Quick discharge bottle
How many smoke detectors are located in the lavatories?
One in the fwd
One in the aft
What indication do we have for smoke in the lavatory?
Triple chime
Master warning flashers
SMOKE (FWD/AFT) LAV warning message
What protection do we have for a lavatory 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
Fire Detection and extinguishing is provided in the…
L/R engine core sections and APU Compartment
When the heat sensing elements are subjected to heat, the…
Resistance decreases
The engine Firex bottles are located in the
Aft Equipment Bay
The Lav Firex bottle is discharged by
Heat sensitive capsule autmoatically
What 2 sub-systems comprise the Fire and Overheat Protection System?
Fire Overheat Detection System and Fire Extinguishing System
What unit controls the Fire Protection, Smoke Detection, and Fire Ext. System?
FIDEEX Unit
The FWD/AFT Cargo Bays have both Smoke det. and Fire ext. equipment. T/F
True
Fire Overheat/Detection loop consists of 2 wires inside a metal sheath separated by_____
An Insulating Material(Thermistor)
