Fire Protection Flashcards
(30 cards)
What areas do the fire detection and extinguishing (FIDEEX) monitor?
- Engine
- Main Landing gear
- APU
- Cargo compartments
Where does the FIDEEX unit provide fire extinguishing?
- APU
- Cargo Compartments
- Engine
What area’s have smoke detection systems?
- Cargo bays
- Lavatorys
What compartments provide fire and overheat detection?
- Engines
- APU
What does an illuminated BOTTLE 1 and 2 ARMED PUSH TO DISCH switchlight during the test of the fire warning system?
The applicable squib will operate normal
When the heat sensing elements are subjected to heat, the:
Resistance decreases
How many squibs does the APU firex bottle have?
1
Where is the APU firex bottle located?
Aft Equipment Bay
Fire detection and extinguishing is provided in the:
Left and Right nacelles and APU areas
When the heat sensing elements are subjected to heat, the:
thermistor material has a decrease in resistance
Most fire detection systems use a dual loop mounted in parallel, which system does not?
Main Landing Gear Bay Overheat system
The fire detection system for the nacelles use:
A dual loop sensing element mounted in parallel
The engine firex bottles are located in the:
Aft Equipment bay
The firex bottles are charged with:
Halon 1301 at 600 to 625 psi with dry nitrogen
An APU fire on the ground will cause:
Shutdown of the APU, automatic discharge of the firex bottle and display a message on EICAS
The lavatory firex bottle is discharged by:
Heat sensitive capsule melting allowing the bottle to discharge
Pushing the ENG FIRE push light “IN” will:
- Arm the dedicated squibs to the affected engine
- Close the following SOVs:
- Fuel
- Hydraulic
- Bleed air
- Shutdown the Engine Driven Generator
Engine fire messages are displayed:
On the Eicas Primary Page
The fire bell can be silenced by pushing “IN” on the:
Master Warning switch light
Pushing the MASTER WARNING switch/light will silence aural warnings
EXCEPT:
- Stall warbler
- GPWS/TCAS voice or aural alerts
- Overspeed clacker
- Flap clacker
- Stab trim clacker
- AP disconnect cavalry charge
- Takeoff Configuration warnings
- Gear horn
ENG BOTTLE LO messages are displayed on:
EICAS Primary Page
What unit controls the Fire Protection, Smoke Detection, and Fire Extinguishing Systems?
FIDEEX Unit
The FWD/AFT Cargo Bays have both Smoke Detection and Fire Extinguishing equipment but not:
Fire Detection equipment
Engine and APU Fire/Overheat Detection is accomplished by which number of loop(s) in the engine areas and APU compartments?
Two
When is a Fire Warning generated?
In a dual loop config, when both loops sense a Fire / Overheat condition.
If one loop fails, the system will revert to a single loop config and only that loop needs to sense a Fire / Overheat condition.
The MLG Bay Overheat system is a single loop system by default
