Fire Protection

Question 1

Fire detection and extinguishing systems are located at which of the following areas?

Answer 1

Engines

APU

Lavatories

Cargo Compartments

Question 2

The ___________ powers engine overheat and fire detection

Answer 2

Battery bus

Question 3

What happens when the engine fire warning switch is pulled up?

Answer 3

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.

Question 4

When the FAULT/INOP and OVHT/FIRE TEST Switch is placed in the OVHT/FIRE position, should the FAULT light illuminate?

Answer 4

No

Question 5

If you are on the ground, what additional indications of an APU fire occur?

Answer 5

The wheel well APU fire warning horn sounds

Question 6

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 ______________?

Answer 6

Main wheel well

Question 7

The Cargo Compartment Fire Suppression System contains how many fire extinguisher bottle(s)?

Answer 7

Two

Question 8

What should happen when pushing the Cargo Fire TEST Switch?

Answer 8

Both extinguishers (EXT) Test Lights should illuminate green

Question 9

If the Overheat Detector Select (OVHT DET) switches in the normal position, ___________________

Answer 9

Detection loop A and B are active

Question 10

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

Answer 10

DETECTOR FAULT

Question 11

If the Cargo Fire Bottle Discharge (DISCH) light is illuminated (amber), what does it mean?

Answer 11

Indicates either extinguisher bottle has discharged

Question 12

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?

Answer 12

A timer is then set for 60 minutes to discharge the second bottle

Question 13

When smoke is detected in the lavatory, what is the flight deck indication?

Answer 13

There is NO flight deck indication.

Question 14

The Lavatory Fire extinguisher would indicate what color to indicate that the heat activated nozzle has discharged?

Answer 14

Aluminum

Question 15

What if the OVHT DET switch is in normal position and one engine overheat and fire detection loop fails, what happens?

Answer 15

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

Question 16

What does an illuminated amber FAULT light on the overheat fire protection panel indicate with the OVHT DET switch in normal?

Answer 16

Both detector loops for an engine has failed.

Question 17

What does an illuminated amber FAULT light on the overheat fire protection panel indicate with the OVHT DET switch selected to A

Answer 17

The A detector loop for an engine has failed

Question 18

A __________ has occurred if both MASTER CAUTION lights, the OVHT/DET system annunciator light, and the related ENG OVERHEAT light illuminates…

Answer 18

An engine overheat

Question 19

The indications of an engine fire are:

Answer 19

• 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.

Question 20

The engine fire warning switches are unlocked by?

Answer 20

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

Question 21

What occurs to the engine fuel system when pulling the engine fire warning switch up

Answer 21

Closes both the engine fuel shutoff valve at the HMU and the spar fuel shutoff valve.

Question 22

What occurs to the respective hydraulic system when pulling the engine fire warning switch up?

Answer 22

Closes the hydraulic fluid shutoff valve and deactivates the engine driven hydraulic pump LOW PRESSURE light.

Question 23

When the Fire Warning BELL CUTOUT switch is pushed it extinguishes both master FIRE WARN lights, Silences the Fire warning bell and______

Answer 23

Resets system for additional warnings

Question 24

When positioning the EXT TEST Switch to 1 or 2, circuit continuity from the squib to ________ is verified

Answer 24

Both engines and APU fire switches

Question 25

What happens when placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST switch to the FAULT/INOP position?

Answer 25

Tests the fault detection circuits for both engines and the APU

Question 26

What happens when placing the Fault/Inoperative (FAULT/INOP) and Overheat/Fire (OVHT/FIRE) TEST Switch to the OVHT/FIRE position.

Answer 26

Tests overheat and fire detection loops on both engines and APU, And wheel well fire detector.

Question 27

What happens when there is an illuminated APU Fire Warning Switch , In the down position?

Answer 27

Unlocks the APU fire warning switch

Question 28

_________ Lights will illuminate during a number 1 engine overheat?

Answer 28

ENG 1 OVERHEAT
MASTER CAUTION
OVHT/DET System annunciator

Question 29

What does an illuminated red WHEEL WELL Fire Warning Light indicate?

Answer 29

A fire in the main gear wheel well

Question 30

An illuminated engine BOTTLE DISCHARGE light Indicates_______

Answer 30

The related fire extinguisher bottle has discharged

Question 31

An illuminated APU DET INOP Light indicates ________

Answer 31

APU detector loop has failed

Question 32

An illuminated APU BOTTLE DISCHARGE Light indicates__________

Answer 32

The APU extinguisher bottle has discharged

Question 33

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

Answer 33

True

Question 34

What happens when pushing the FWD Cargo Fire ARM Switch?

Answer 34

Arms the extinguisher for the forward cargo compartment