Fire Protection

Question 1

Each engine contains two (Blank / Blank)

Answer 1

two overheat and fire detector loops

Question 2

If the FAULT light is illuminated what has happen?

Answer 2

Both loops have failed on the engine

Question 3

The engine fire extinguisher system consists of?

Answer 3

two engine fire extinguisher bottles, two engine fire switches, two BOTTLE DISCHARGE lights and an EXT TEST switch

Question 4

Pulling the engine fire switch does what?

Answer 4

• closes both the engine fuel shutoff valve and the spar fuel shutoff valve
• closes the engine bleed air valve resulting in loss of wing anti-ice to the affected wing and closure of the bleed air operated pack valve
• trips the generator control relay and breaker
• closes the HYD fluid shutoff valve. The engine dirven HYD pump LOW PRESSURE light is deactivated
• disables the thrust reverser for the related engine
• allows the engine fire switch to be rotated for discharge
• arms one discharge squid on each engine fire extinguisher bottle

Question 5

how many fire detector loops are there for the APU

Answer 5

UNO

Question 6

if the single loop is INOP what light will illuminate?

Answer 6

APU DET INOP

Question 7

the APU fire extinguisher system consists of?

Answer 7

one APU fire extinguisher bottle,
an APU fire switch,
an APU BOTTLE DISCHARGE LIGHT, and
an EXT TEST switch

Question 8

Where is the APU ground control panel?

Answer 8

Right main wheel well

Question 9

Pulling the APU fire switch does?

Answer 9

• provides backup for the automatic shutdown feature
• deactivates the fuel solenoid and closes the APU fuel shutoff valve
• closes the APU bleed air valve
• closes the APU air inlet valve
• trips the APU generator control relay and breaker
• allows the APU fire switch to be rotated for discharge
• arms the APU fire extinguisher bottle squib

Question 10

Main wheel well fire protection consists of and is powered by?

Answer 10

detection only, not extinguishing system // nose wheel well does not have a fire detection system // AC transfer bus 2 and battery bus

Question 11

Cargo compartment fire protection consists of?

Answer 11

• Cargo compartment smoke detection powered by DC bus 1 and DC bus 2
• cargo compartment fire suppression powered by the hot battery bus

Question 12

What compartments are fire bottles installed?

Answer 12

FWD or AFT no main deck

Question 13

What happens when you discharge cargo fire disch switch?

Answer 13

the first bottle is completely discharged in the selected compartments, the second bottle discharges at a reduced rate