Fire Protection Flashcards
Which areas of the aircraft have fire extinguishing capability?
- Engines
- APU
- Lower Cargo Compartments.
- Lavatories.
-For Freighter fire extinguishing capability, see the Systems Handbook [800F].
What fire protection functions are available without battery power?
- The following extinguishing capabilities are powered by the Hot Battery Bus:
o Engine Fire Extinguishing.
o APU Fire Extinguishing.
o Lower Cargo Fire Extinguishing.
Can you discharge the fire bottles using only battery power?
Yes
How is the fire warning bell silenced?
- FIRE WARN red switch-light on the Glare
shield. - BELL CUTOUT switch on the Fire Protection
Panel. - Remote APU horn Cutout located in the
Right Main Wheel Well.
How is an engine fire extinguished?
Two engine fire extinguisher bottles containing halon with a nitrogen pre-charge, located in the left main wheel well. Either or both engine fire extinguisher bottles can be discharged into either engine.
Which systems are affected by pulling an engine fire switch and how are they affected?
- Pulling the engine fire switch up does the following:
o Closes both associated engine fuel shutoff
valve and spar fuel shutoff valve.
o Closes associated engine bleed air valve
and onside pack valve.
o Closes the associated hydraulic fluid
shutoff valve (ENG HYD pump LOW
PRESSURE amber light is inhibited).
o Trips the associated generator control relay
and breaker.
o Disables thrust reverser for related engine
o Arms one discharge squib on each engine
fire extinguisher bottle.
o Allows the engine fire switch to be rotated
for discharge. - Those panels which are light grey in color on
the overhead panel.
How is a dual loop failure of an Engine Fire Detection System indicated?
The FAULT light will illuminate in the event of a dual loop failure.
How many fire extinguishing bottles are provided for the APU?
One.
Does the APU have automatic fire extinguishing?
No.
What happens when pulling the APU fire switch?
- Provides backup for the automatic
shutdown feature. - Closes the APU Fuel Shutoff Valve.
- Closes the APU Bleed Air Valve.
- Closes the APU Air Inlet Door.
- Trips the APU Generator Control Relay and
Breaker. - Allows the APU Fire Switch to be rotated for
discharge. - Arms the APU Fire Extinguisher Bottle Squib.
Where is the APU Fire Ground Control panel located?
Right Main Wheel Well.
What does placing the fire detection TEST switch to FAULT/INOP test?
- Tests the systems ability to detect a fault or inoperative equipment.
- This selection will test the engine and APU fault detection and illuminate the lights associated with faults in the system.
- The indications of a successful FAULT/INOP test are:
o both MASTER CAUTION lights illuminate.
o OVHT/DET System Annunciator light illuminates.
o FAULT light illuminates.
o APU DET INOP light illuminates.
What does placing the fire detection TEST switch to OVHT/FIRE test?
- Tests the overheat and fire detection loops for both fire detection loops on both engines.
- Tests the fire loop on the APU.
- Tests the fire detector in the wheel well.
- Indications of a successful OVHT/FIRE test
are:
o Fire warning bell sounds
o both Master FIRE WARN red lights
illuminate.
o both Master Caution lights illuminate.
o OVHT/DET System Annunciator light
illuminates.
o both ENG OVERHEAT lights illuminate.
o both engine fire switches illuminate.
o both engine start switches illuminate (MAX
and 900ER only).
What is indicated by the illumination of the DETECTOR FAULT light on the CARGO FIRE panel?
One of more detectors in the lower cargo compartment have failed.
What fire protection and extinguishing equipment is available in the lower cargo compartments?
- Two halon fire suppression bottles, a high
rate bottle, and a low rate bottle. - First bottle fires high rate and initiates a
fifteen-minute timer. - The second bottle fires at 15 minutes.
- Provides a total of 195 minutes of fire
suppression.
