Fire Protection

Question 1

Which of the following areas have fire detection and extinguishing systems?

Answer 1

Engines, APU, Lavatories, Cargo Compartments

Question 2

Engine overheat and fire detection is powered by the _________.

Answer 2

Battery bus

Question 3

If one engine overheat and fire detection loop fails with the OVHT DET switch in normal _____________.

Answer 3

the failed loop is automatically deactivated and the remaining loop functions as a single loop detector

Question 4

With the OVHT DET switch in normal, what does an illuminated amber FAULT light on the overheat fire protection panel indicate?

Answer 4

both detector loops for an engine have failed

Question 5

With the OVHT DET switch selected to A, what does an illuminated amber FAULT light on the overheat fire protection panel indicate?

Answer 5

the A detector loop for an engine has failed

Question 6

If both MASTER CAUTION lights, the OVHT/DET system annunciator light, and the related ENG OVERHEAT light illuminate, what has occurred?

Answer 6

An engine overheat

Question 7

What are the indications of an engine fire?

Answer 7

() all answers are correct
() The fire warning bell sounds, both master FIRE WARNING lights illuminate, the related engine fire warning switch illuminates
() All related engine overheat alert indications illuminate

Question 8

How are the engine fire warning switches unlocked?

Answer 8

Illumination of an engine fire warning switch, illumination of an ENG OVERHEAT light, or manually by pushing the fire warning switch override

Question 9

Pulling the engine fire warning switch up ___________.

Answer 9

closes both the engine fuel shutoff valve at the HMU and the spar fuel shutoff valve

• closes the engine bleed air valve
• closes the hydraulic fluid shutoff valve and deactivates the engine driven hydraulic pump LOW PRESSURE light

Question 10

Pushing the Fire Warning BELL CUTOUT Switch, extinguishes both master FIRE WARN lights, silences the fire warning bell and ___________.

Answer 10

resets system for additional warnings

Question 11

During the Extinguisher test, positioning the EXT TEST Switch to 1 or 2 verifies circuit continuity from the squib to __________.

Answer 11

both engines and APU fire switches

Question 12

Placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the FAULT/INOP position __________.

Answer 12

tests the fault detection circuits for both engines and the APU

Question 13

Placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the OVHT/FIRE position __________.

Answer 13

tests overheat and fire detection loops on both engines and APU, and wheel well fire detector

Question 14

An illuminated APU Fire Warning Switch, in the down position, indicates a fire in the APU, and _________.

Answer 14

unlocks the APU fire warning switch

Question 15

During a number 1 engine overheat, which lights will illuminate?

Answer 15

ENG 1 OVERHEAT, MASTER CAUTION, and OVHT/DET system announciator

Question 16

An illuminated red WHEEL WELL Fire Warning Light indicates ________.

Answer 16

a fire in the main gear wheel well

Question 17

What does an illuminated engine BOTTLE DISCHARGE light indicate?

Answer 17

the related fire extinguisher bottle has been discharged

Question 18

What does an illuminated APU DET INOP light indicate?

Answer 18

APU detector loop has failed

Question 19

What does an illuminated APU BOTTLE DISCHARGE light indicate?

Answer 19

the APU extinguisher bottle has been discharged

Question 20

Does pushing the Master Fire Warning (FIRE WARN BELL CUTOUT) on the glareshield have the same results as pushing the fire warning bell cutout switch on the overheat/fire protection panel?

Answer 20

yes

Question 21

Should the FAULT light illuminate when the FAULT/INOP and OVHT/FIRE TEST Switch is placed in the OVHT/FIRE position?

Answer 21

no

Question 22

What additional indications of an APU fire occur on the ground?

Answer 22

the wheel well APU fire warning horn sounds

Question 23

The APU ground control panel is located in the __________ and contains an APU fire warning light, an APU BOTTLE DISCHARGE switch, an APU fire control handle, and an APU HORN CUTOUT switch.

Answer 23

main wheel well

Question 24

There are ______ fire extinguisher bottle(s) installed for the Cargo Compartment Fire Suppression System

Answer 24

two

Question 25

When the Cargo Fire TEST Switch is pushed, _________.

Answer 25

both extinguisher (EXT) test lights should illuminate green

Question 26

With the Detector Select (DET SELECT) Switches in NORM, _______.

Answer 26

detection loop A and B are active

Question 27

What light illuminates when both loops in one or both cargo compartments have failed?

Answer 27

DETECTOR FAULT

Question 28

Pushing the FWD Cargo Fire ARM Switch _________.

Answer 28

arms the extinguisher for the forward cargo compartment

Question 29

An illuminated Cargo Fire Bottle Discharge (DISCH) light _________.

Answer 29

indicates either extinguisher bottle has discharged

Question 30

On the B737-800, after the Cargo Fire System is armed, if the Cargo Fire Discharge (DISCH) Switch is pushed, the first extinguisher bottle is discharged. ______________

Answer 30

a timer is then set for 60 min to discharge the second bottle automatically

Question 31

What is the flight deck indication when smoke is detected in the lavatory?

Answer 31

there is no flight deck indication

Question 32

During a preflight inspection, what color on the Lavatory Fire Extinguisher would indicate that the Heat Activated Nozzle has been discharged?

Answer 32

aluminum