Fire Protection

Question 1

Placing the Overheat/Fire Protection Panel Test Switch to

FAULT/INOP checks _____ and related Flight Deck indicators

Answer 1

engine and APU module fault detection circuitry

Question 2

Rotating an Engine Fire Switch in one direction _____.

Answer 2

electrically fires a squib on one bottle”,” discharging the

extinguisher

Question 3

If illuminated”,” the ENG OVERHEAT light and Engine Fire

Switch remain illuminated until ________.

Answer 3

the temperature drops below the onset temperature

Question 4

The _____ Bus powers the APU Fire Detection and the _____

Bus powers the APU Fire Extinguishing.

Answer 4

Battery / Hot Battery

Question 5

When TEST is pushed and held on the Boeing Cargo Fire
Panel”,” a DETECTOR FAULT light (amber) illuminated
indicates ______.

Answer 5

a fault (failure) in one or more detectors in the loop(s)

Question 6

Select the two events that will unlock the APU Fire Switch

______. (Select ALL correct answers.)

Answer 6

using the Fire Switch Override

3) the Fire Switch illuminates

Question 7

Pushing either illuminated Master FIRE WARN light”,” in

flight”,” _____.

Answer 7

1) silences the Fire Warning Bell
2) extinguishes both FIRE WARN lights
3) resets the system for future warnings
4) all of the above

Question 8

The second fire bottle”,” on the Boeing Lower Cargo
Compartment Fire Suppression Dual Bottle system”,”
discharges _____.

Answer 8

automatically by a timer”,” 60 minutes after the first

bottle discharge

Question 9

If one overheat/fire detector loop fails with the OVHT DET

switch on NORMAL”, “the _____.

Answer 9

remaining loop functions as a single loop detector

Question 10

Complete this statement: Main wheel well fire _____.

Answer 10

detection requires AC power

Question 11

Pushing the _____ provides the same function as pushing

either Master FIRE WARN light for an engine fire warning

Answer 11

2) Fire Warning BELL CUTOUT switch

Question 12

With the OVHT DET switch in the A position”,” _____ can

initiate an overheat or fire warning.

Answer 12

only the A detector loop

Question 13

The _____ Bus powers the Engine Overheat and Fire
Detection. The _____ Bus powers the Engine Fire
Extinguishing

Answer 13

1) Battery / Hot Battery

Question 14

Placing the Overheat/Fire Protection Panel Test Switch to

OVHT/FIRE checks ______.

Answer 14

engine”,” APU and wheel well overheat and fire

detection circuitry

Question 15

Setting the ENGINES APU EXT/TEST switch to position _____

tests the APU Fire Bottle _____.

Answer 15

1 or 2 / circuit continuity

Question 16

A FAULT light (amber) illuminates during an OVHT FIRE test.

This indicates a failure of ______.

Answer 16

at least one loop on an engine

Question 17

With the OVHT DET switch selected to “A” during an
Overheat/Fire Test”,” a FAULT light (amber) indications
means_____.

Answer 17

there is a fault in loop A only

Question 18

Pressing the HORN CUTOUT switch on the APU Fire Control
Panel (main wheel well) silences the _____ and the APU Fire
Warning Light _____.

Answer 18

) Fire Warning Bell and APU Fire Warning Horn / stops

flashing but remains illuminated