Fire Prot Flashcards
Fidex system avail for?
Engine nacelles
Apu
Cargo comp
How many engine fire det loops?
2 loops
Both loops must detect fire or ovht
Short in one loop? Sngle loop detect
L/R FIRE FAIL caution
L/R FIRE FAIL caution?
Short or open circuit in one loop detected.
Switches to sngle loop detect
Engine extinguishing sys
How many bottles?
Located in aft equip bay
L/R eng fire push?
FueL
BLEED AIR
Hydraulic SOV
Arms squibs ( both btls)
Engine bottles contain?
Halon
BTL 1/2 ARMED PUSH TO DISCH LT?
Squib is armed and btl charged
APU fire on gnd?
Shuts down
After 5 sec , discharges btl
APU FIRE PUSH pressed in?
Btl armed push to discharge lt comes on
Apu squibs armed
Apu fuel SOV closes
Apu lcv closes
APU fire shutoff Relay is energized to shutdown APU
What type of fire detection in cargo
Optical sensors
How many optical smoke detectors in cargo bins?
FWD 3
AFT. 2
How many cargo detectors to detect smoke?
2 cargo detectors must detect smoke for warning
Cargo smoke detector fault?
FIRE SYS FAULT status
Fire suppression for cargo departments?
1 hi rate discharge
1 lo rate discharge btl
Located inside rt belly fairing of main landing gear
Qty MLG OVHT DET loops?
Single loop per wheel
CARGO SMOKE PUSH?
Arms fwd and aft squibs
Closes AC SOV valve
Heater off
Cargo btls located?
Inside rt belly fairing aft of main landing gear
Engine qty loops?
Dual loops - 2 bottles - 2 squibs
Apu qty loops , btl, squibs
Dual loops - 1 btl - 1 squib
Cargo qty smk detectors- btls
Optical sensors -3 fwd, 2 aft
2 btls hi/ lo ( dischg simultaneously)
MLG qty loops
1/ wheel
THE FIDEX interfaces with
Engines
Nacelles
Cargo comp
Engine fire detection qty loops
Dual heat sens loops
How many loops to detect a fire?
2 needed to detect a fire
Fault in one engine fire detect loop?
L/R FIRE FAIL caution
Switches to sngl loop detection
APU FIRE FAIL caution?
Short circuit or open circuit in 1 loop
APU how many loops?
Dual loops
Both loops needed to detect fire
Cargo detector fault?
FIRE SYS FAULT status
switches to single detector ops
Cargo fire bottles
2
Hi rate btl and lo rate btl
Fire simultaneously
Located inside rt belly fairing
What arms aft and fwd cargo squibs?
Cargo smoke push
aft also closes ac sov and heater
How many APU firex bottles?
1 APU bottel (1 squib)
Which system is not part of fidex system?
LAV
LAV fire detection / protection?
Ceiling mounted smoke detector
Waste compartment fire ext
CARGO
btl armed push to disch
If lit green?
Squibs armed
Bottles charged
LAV extinguishing components?
Ext bottle w/ dual dischg nozzle
(End of nozzles have heat sens capsule)
Temp sensor on inside of door to provide evidence of hi heat
What happens when smoke detected on LAV?
Aural alarm sounds in LAV
EICAS SMOKE FWD(AFT) LAV
Do both cargo bottles discharge simultaneously?
Yes
Apu fire on gnd , fuel and bleed at SOV close .. After 5 seconds??
Fire btl discharges automatically
External horn blows
Where do we have smoke detection?
Cargo
Lav
What happens when the
ENG FIRE PUSH switch light is pressed
Switch lights. illuminate
Arms both SQUIBS
SOV fuel closes
SOV BLEED AIR
SOV HYDR
generator off-line
FADEC disables both ignition systems on the affected engine
Does the APU shut down for a fire on the ground
In-flight
Yes!!
On the ground the bottles discharge in five seconds
In-flight the crew much discharge the bottle
What happens when a cargo smoke warning is generated OR cargo smoke push switch light is pressed?
Heater shuts down
Air inlet us will be close
Air outlet SOV closes
( also ….. cargo smoke push switch light arms squibs)
What actually fires the cargo extinguisher squibs??
The green bottle Armed push to discharge switch
How many cargo bottles
2
One fastest charge one slow discharge
The FIDEX Unit is used to monitor the…?… of the loops
Electrical resistance
How many portable halon extinguishers and where?
3
Behind the copilot
Entrance storage compartment
Wardrobe closet
FOE.. fuel oil electric
How many water extinguishers
1
Right aft bulkhead of Cabin
Used for wood paper and fabric
Where is the FCU(fire control unit) located?
Under captains storage bin
Cargo fire extinguishers discharge time?
Fast btl. 60 seconds
Slo bottle 60 minutes
Fwd cargo push switch?
Only arms squibs
APU shuts down automatically for a fire inflight and on ground!!
Whats the difference tho?
Ground.. fire btl auto fires after 5 seconds
In flight the crew must discharge
8-9 ch8 fire protection
Cargo bay fires btls are where?
Rt wing fairing
8-14
Dual loop systems?
Engines
APU
Single loop systems
Main landing gear
FIRE SYS OK ….is what type of message?
ADVISORY
Push fwd cargo push swtch?
Only arms squibs
If the fidec detects smoke in the after cargo Bay, Will it automatically shut off the cargo bay heater and close the intake and exhaust shut off valves?
Yes.. automatically
Fire sys fault status?
One of the smoke detectors fails the built-in test
Now requiring only one smoke detector to Trip
FIRE SYS FAULT status?
Loss of redundancy
Failed loop in the engine or APU … or failure of a cargo smoke detectors
How many portable hand operated fire extinguishers?
3
Flight deck
Forward entrance stowage
Wardrobe closet
What type of Halon?
Halon1211
Halon 1211 is used for?
FOE
FIRE
OIL
ELECTRICAL
