Fire protection areas?
Lavatory
FWD baggage compartment
Engines
AFT baggage compartment
APU
What detects a fire?
Detector loops and smoke detectors
Pneumatic detectors are where?
APU
Engines
Wheel well
Smoke detectors are where?
Baggage compartments
Lavatory (not connected to control amplifier)
How many engine detector loops are there?
3 per engine (APD advance pneumatic detectors)
3 zones in the engine nacelle?
Primary engine zone (PEZ)
Leading edge zone (LEZ)
Main wheel well zone (MWW)
What is loop A in the engine nacelle?
PEZ & LEZ
What is loop b in the engine nacelle?
MWW
Will check fire DET lights remain illuminated when there is a fire after being pressed?
Yes
When a fire is successfully extinguished in the engine which lights will go out?
ENGINE FIRE PRESS TO RESET and PULL FUEL/HYD OFF handle
FAULT A or FAULT B light and CHECK FIRE DET is a result of?
The engine loops APD is punctured, loses pressure or loses electrical power
If a PEZ loop fails and the FAULT A light illuminates while the LEZ loop detects a fire what happens?
One of the two loops has an issue but one still detected the fire so the normal fire warning indications will happen as well as a FAULT A light being illuminated
If the LEZ loop fails and FAULT A light illuminates but the PEZ loops identifies a fire will there be any fire warnings?
NO only FAULT A light is illuminated
If a fire bottle is low for the engines what happens?
Master warning CHECK FIRE DET and BTL LOW
After a fire bottle is discharged what lights will be illuminated?
The BTL low light and the EXTG AFT BTL
If an armed bottle light does not illuminated after pulling the PULL FUEL HYD OFF handle what does this mean?
Bottle has lost pressure or malfunction with the squib ( the electro explosive device used to release the extinguishing agent)
Does the Forward baggage compartment have smoke detectors and fire protection?
1 smoke detector and two fire bottles
Smoke in the FWD baggage area what do you see in flight deck?
→ Smoke warning light
→ Red and white guarded light (FWD baggage); and
→ FWD ARM light on Fire Bottle panel.
FIRE BOTTLE FORWARD ARM light illuminated means?
High rate fire extinguisher bottle for forward baggage compartment is ready for use
Pressing the red and white guarded switch does what?
Discharges the high rate fire bottle into the baggage compartment. If airborne a second low rate bottle begins discharging
Illumination if the FIRE BOTTLE AFT LOW and FIRE BOTTLE FWD LOW light happens when?
Fully depleted approx 45mins after the high rate bottle discharge
AFT baggage smoke indicators?
How long after the high rate fire bottle in the AFT baggage compartment before the low rate bottle starts?
7mins
How many smoke detectors in each bag comp?
FWD 1
AFT 2