Fire Protection Flashcards
Fire detection and extinguishing systems are located at which of the following areas?
Engines
APU
Lavatories
Cargo Compartments
The ___________ powers engine overheat and fire detection
Battery bus
What happens when the engine fire warning switch is pulled up?
Closed fuel, hydraulic shutoff, and engine bleed air valves.
Disables the reverser, trips the respective generator control circuit breaker, and deactivates the engine-driven hydraulic pump.
When the FAULT/INOP and OVHT/FIRE TEST Switch is placed in the OVHT/FIRE position, should the FAULT light illuminate?
No
If you are on the ground, what additional indications of an APU fire occur?
The wheel well APU fire warning horn sounds
The APU ground control panel contains an APU fire warning light, an APU BOTTLE DISCHARGE switch, an APU fire control handle, and an APU HORN CUTOUT switch and is located in the ______________?
Main wheel well
The Cargo Compartment Fire Suppression System contains how many fire extinguisher bottle(s)?
Two
What should happen when pushing the Cargo Fire TEST Switch?
Both extinguishers (EXT) Test Lights should illuminate green
If the Overheat Detector Select (OVHT DET) switches in the normal position, ___________________
Detection loop A and B are active
The ___________ light illuminates when both loops in one or both cargo compartments have failed?
DETECTOR FAULT
If the Cargo Fire Bottle Discharge (DISCH) light is illuminated (amber), what does it mean?
Indicates either extinguisher bottle has discharged
What happens on the B737-800, after the Cargo Fire System is armed, if the Cargo Fire Discharge (DISCH) switch is pushed, and the fire extinguisher bottle is discharged?
A timer is then set for 60 minutes to discharge the second bottle
When smoke is detected in the lavatory, what is the flight deck indication?
There is NO flight deck indication.
The Lavatory Fire extinguisher would indicate what color to indicate that the heat activated nozzle has discharged?
Aluminum
What if the OVHT DET switch is in normal position and one engine overheat and fire detection loop fails, what happens?
The failed loop is automatically deactivated and the remaining loop functions as a single loop detector
What does an illuminated amber FAULT light on the overheat fire protection panel indicate with the OVHT DET switch in normal?
Both detector loops for an engine has failed.
What does an illuminated amber FAULT light on the overheat fire protection panel indicate with the OVHT DET switch selected to A
The A detector loop for an engine has failed
A __________ has occurred if both MASTER CAUTION lights, the OVHT/DET system annunciator light, and the related ENG OVERHEAT light illuminates…
An engine overheat
The indications of an engine fire are:
- All related engine overheat alert indications illuminate.
- The fire warning bell sounds, both master FIRE WARNING lights illuminate, the related engine fire warning switch illuminates.
The engine fire warning switches are unlocked by?
Illumination of an engine fire warning switch, illumination of an ENG OVERHEAT light or manually by pushing the fire warning switch override
What occurs to the engine fuel system when pulling the engine fire warning switch up
Closes both the engine fuel shutoff valve at the HMU and the spar fuel shutoff valve.
What occurs to the respective hydraulic system when pulling the engine fire warning switch up?
Closes the hydraulic fluid shutoff valve and deactivates the engine driven hydraulic pump LOW PRESSURE light.
When the Fire Warning BELL CUTOUT switch is pushed it extinguishes both master FIRE WARN lights, Silences the Fire warning bell and______
Resets system for additional warnings
When positioning the EXT TEST Switch to 1 or 2, circuit continuity from the squib to ________ is verified
Both engines and APU fire switches
What happens when placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST switch to the FAULT/INOP position?
Tests the fault detection circuits for both engines and the APU
What happens when placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the OVHT/FIRE position.
Tests overheat and fire detection loops on both engines and APU, And wheel well fire detector.
What happens when there is an illuminated APU Fire Warning Switch , In the down position?
Unlocks the APU fire warning switch
_________ Lights will illuminate during a number 1 engine overheat?
ENG 1 OVERHEAT
MASTER CAUTION
OVHT/DET System annunciator
What does an illuminated red WHEEL WELL Fire Warning Light indicate?
A fire in the main gear wheel well
An illuminated engine BOTTLE DISCHARGE light Indicates_______
The related fire extinguisher bottle has discharged
An illuminated APU DET INOP Light indicates ________
APU detector loop has failed
An illuminated APU BOTTLE DISCHARGE Light indicates__________
The APU extinguisher bottle has discharged
Pushing the Master Fire Warning (FIRE WARN BELL CUTOUT) on the glareshield have the same results as pushing the fire warning bell cut out switch on the overheat/fire protection panel
True
What happens when pushing the FWD Cargo Fire ARM Switch?
Arms the extinguisher for the forward cargo compartment
