Fire Protection

Question 1

Fire warning BELL CUTOUT switch push does?

Answer 1

extinguishes both master FIRE WARM lights
silences the fire warning bell
silences the remote APU fire warning horn in wheel well
resets the system for additional warnings

Question 2

Overheat Detector OVHT DET switch
Normal
A
B

Answer 2

normal both loop A and B are active
A loop is active
B loop is active

Question 3

Extinguisher EXT test switch

Answer 3

it test bottle discharge circuit continuity for all three bottles.
Lights are green system is Normal

Question 4

FAULT/INOP test what?

Answer 4

fault detection circuits for both engine and APU

Question 5

OVHT/FIRE test?

Answer 5

overheat and fire detection loops on engines and APU

Each engine contains TWO overheat/fire detector loops

Question 6

Engine fire Detection is powered by?

Engine fire Extinguishing is powered by?

Answer 6

Battery bus

Hot battery bus

Question 7

ENG overheat light amber

Answer 7

indicates overheat in related engine

Note: master caution and OVHT/DET system annunciator lights illuminate.

Question 8

Fault light amber

Answer 8

Normal both loops have failed
in A or B the selected loop has failed

Note: Master caution and OVHT/DET system annunciator lights do NOT illuminate

Question 9

APU fire warning light ( in wheel well )
red flashing?
red steady?

Answer 9

indicates fire in APU

APU fire warning horn cutout switch has been pushed

Question 10

Lavatory fire extinguisher
Temperature Indicator
White?
Black?

Answer 10

normal condition

exposed to high temperatures

Question 11

Heat activated nozzles
Flat black?
Aluminum?

Answer 11

normal conditions

indicates extinguisher has discharged

both nozzles discharge toward the towel disposal container.

Question 12

How many engine fire bottles?

Answer 12

TWO

Question 13

Pulling the engine fire switch UP?

Answer 13

Closes Fuel 
Closes Bleed air
Closes HYD
Trips Gen
disables thrust
allows the engine fire switch to rotate
arms one of the squibs on each engine fire extinguisher bottle

Question 14

APU Fire Detection powered by

APU fire extinguishing powered by

Answer 14

battery bus

hot battery bus

Question 15

How many Fire detection loops are on the APU

Answer 15

ONE

Question 16

If Loop failed on APU what is the indication?

Answer 16

APU DET INOP on center pedestal

Question 17

Pulling up on the APU fire handle/switch does?

Answer 17

Back up for automatic shutdown
Deactivates the ECU and closes fuel
close bleed air valve
closes inlet door
trips GEN
Allows switch to be rotated for discharge
arms the bottle squib

Question 18

Wheel well protections is powered by

Answer 18

No. 2 AC transfer bus

Note: the wheel well has no extinguishing system

Question 19

Main wheel well has how many fire loops?

Answer 19

ONE

Question 20

Cargo fire protection powered by these systems?

Answer 20

Smoke detection by DC bus 1 and DC bus 2

EXTINGUISHING by hot battery bus

Question 21

Lavatory fire extinguisher system is?

Answer 21

operates automatically

flight deck has no indication of extinguisher discharge