What happens when either illuminated Master FIRE WARN light is pushed?
- extinguishes the FIRE WARN lights, and
- silences the Fire Warning Bell, and
- reset the system for future warnings, and
- (on the ground) silences the remote APU Fire Warning Horn
(Sec 8.010 p 2)
Which other switch provides the same function as pushing either Master Fire Warn light for an engine fire warning?
Fire Warning BELL CUTOUT switch
Sec 8.010 p 2
Which Bus power the Engine Overheat and Fire Detection? Which Bus powers the Engine Fire Extinguishing?
Detection: Battery Bus
Extinguishing: Hot Battery Bus
(Sec 8.010 p 3)
What will cause an illuminated ENG OVERHEAT light and/or Engine Fire Switch to extinguish?
Temperature drops below the onset temperature
Sec 8.010 p 4
With the OVHT DET switch in the A or B position, what initiates an overheat or fire warning?
In A or B, the system operates as a single loop system, the non-selected loop is not monitored
(Sec 8.010 p 4)
With the OVHT DET switch selected to “A”, during an Overheat/Fire Test, what does a FAULT light (amber) indication mean?
The A loop has failed
Sec 8.010 p 4
If one overheat/fire detector loop fails with the OVHT DET switch on NORMAL, how is a fire detected?
If one loop fails with OVHT DET switch in NORMAL, that loop is automatically deselected and the remaining loop functions as a single loop detector
(Sec 8.010 p 4)
What does rotating an Engine Fire Switch do?
Electronically fires a squib, discharging the extinguishing agent into the related engine
(Sec 8.010 p 6)
What causes a Fire Switch to unlock?
- A fire detected
- The Manual Override Switch
(Sec 8.010 p 7)
Which Bus powers the APU Overheat and Fire Detection? Which Bus powers the APU Fire Extinguishing?
APU Fire Detection: Battery Bus
APU Fire Extinguishing: Hot Battery Bus
(Sec 8.010 p 8)
What does pressing the HORN CUTOUT switch on the APU Fire Control Panel (main wheel well) do?
- silences the Fire Warning Bell
- silences the APU Fire Warning Horn
- causes the APU Fire Warning Light to stop flashing, but remains illuminated
(Sec 8.010 p 11)
What power source is required for Main Wheel Well fire detection?
AC Power (No 2 AC Transfer Bus)
Sec 8.010 p 13
What components are tested with the Overheat/Fire Protection Panel Test Switch to OVHT/FIRE?
APU Overheat and Fire Detection circuitry and related Flight Deck indications:
- Overheat
- Fire detection loops (both engines)
- APU
- Main wheel well
(Sec 8.010 p 14)
What components are tested with the Overheat/Fire Protection Panel Test Switch to FAULT/INOP?
- Both MASTER CAUTION lights illuminate
- OVHT/DET system annunciator light illuminates
- FAULT light illuminates (failure means fault monitoring system INOP)
- APU DET INOP light illuminates
(Sec 8.010 p 14)
What does a FAULT light (amber) illuminating during an OVHT FIRE test indicate?
A bad loop on an engine
Sec 8.010 p 15
What does the ENGINES APU EXT/TEST switch test?
Pos 1: No 1 ENG squibs on L/R Fire Bottles and APU Fire Bottle
Pos 2: No 2 ENG squibs on L/R Fire Bottles and APU Fire Bottle
(Sec 8.010 p 15)
What does a DETECTOR FAULT light (amber) illuminated indicate when TEST is pushed and held on the Boeing Cargo Fire Panel?
One or more detectors in the related loop(s) has failed
Sec 8.010 p 17
When does the first bottle on the Boeing Lower Cargo Compartment Fire Suppression Dual Bottle system discharge? The second bottle?
First Bottle: when the DISCH switch is pushed after being armed (60 minutes timer)
Second Bottle: automatically discharged by the timer 195 minute protection
(Sec 8.010 p 18)
