Fire Protection Flashcards
APD?
Advanced Pneumatic Detectors
How many loops in engine? names
PEZ - Primary Engine Zone
LEZ - Leading Edge zone
MWW - Main Wheel Well
Control Amplifier
primary interfacing fire detection component
How many engine fire protection loops are there for each engine?
2 Loops made up of three APDs
Loop A = Primary Engine Zone (PEZ) & Leading Edge Zone (LEZ)
Loop B = Main Wheel Well Zone (MWW)
How many engine fire bottles are there?
2 Bottles - one in each wing root
What is the indication if a fire bottle has thermally discharged?
Burst discs
What is the indication of a fault with an engine fire loop?
Either the FAULT A or FAULT B lights illuminate
NB: Due to LOOP A (LEZ & PEZ) being connected in series, a fault in the PEZ will still allow a fire indication for the . However, a fault in the LEZ will shield the connection with PEZ and any fault or fire in the PEZ will not be detected.
What are the cockpit indications of an engine fire?
Fire Bell ENGINE FIRE MASTER WARNING MASTER WARNING CHECK FIRE DET warning Related PULL FUEL/HYD OFF handle illuminates
Where is the lavatory fire bottle located?
Inside the waste bin
How does the lavatory fire bottle operate?
It is automatically discharged via a thermal plug which melts to release extiguishing agent into the waste bin
What are the indications of a lavatory fire?
If smoke detector senses smoke: Detector audible warning tone (in cabin) Detector alarm light comes on (red) LAV SMOKE light (red) illuminates on all three cabin advisory light panels (rainbow panels) Chime (high) sounds on cabin speakers
NB no flight deck indications for a lavatory fire, however the aural tones will likely be heard by crew
How many portable fire extinguishers are there?
4 total
1 in cockpit behind captains seat
3 in cabin (1x BCF/halon in fwd equipment cupboard, 1x BCF/Halon and 1x water in left dogbox 19A/B)
What are the indications of an aft baggage compartment fire?
MASTER WARNING
SMOKE warning light
On FPP: AFT SMOKE (red) advisory light EXTG (white) advisory light on VENT VALVE INLT (white) comes on VENT VALVE OTLT (white) comes on AFT ARM (amber) advisory light on
How many baggage compartment fire bottles are there?
2x High Rate Discharge (HRD) bottles - one for FWD and one for AFT baggage
1x Low Rate Discharge (LRD) bottles - shared between both baggage areas
When do the baggage compartment fire bottles discharge?
Pushing the SMOKE/EXTG guarded switchlights for the either the FWD or AFT baggage compartments will discharge the HRD bottle for that area.
The LRD bottle is discharged at the same time as the HRD for a FWD baggage fire
The LRD bottle is discharged after a 7 min delay for an AFT baggage fire
The LRD will take approx 45 min to discharge fully
