FIRE PROTECTION

Question 1

1. Dual loop fire/overheat detection is provided for each engine. What occurs if a single loop fault is sensed in the fire/overheat system?

Answer 1

1. The system automatically switches to a single loop operation.

Question 2

2. Fire and overheat detector loops are continuously monitored for faults. What occurs if there are faults in both detector loops in a engine nacelle?

Answer 2

2. No fire or overheat protection is provided, and EICAS advisory message DET FIRE ENG (L or R) is displayed.

Question 3

3. When an engine fire is detected, what indications will the pilot have?

Answer 3

3. Fire bell sounds.
   Master WARNING light illuminates.
   An EICAS warning message FIRE ENG (L/R) displays.
   Engine fire switch warning light illuminates (LEFT or RIGHT engine fire switch)
   Fire switch unlocks.
   Engine FUEL CONTROL switch fire warning light illuminates.

Question 4

4. What type of fire detection system does the APU have?

Answer 4

4. The APU compartment has dual fire detector loops. Normally both loops must detect a fire to produce a fire warning.

Question 5

5. If an APU fire is detected, what indications will the pilot have?

Answer 5

5.
Fire bell sounds.
Master WARNING lights illuminate.
EICAS warning message FIRE APU displays
APU fire switch warning light illuminates.
APU fire switch unlocks.

Question 6

6. Pulling and rotation the APU fire handle in either direction discharges the extinguisher into the APU compartment. What pilot indications will display?

Answer 6

6. APU BTL DISCH light illuminates.
   EICAS advisory message BOTTLE DISCH APU displays.

Question 7

7. What type of fire protection and detection is provided to the main gear wheel wells?

Answer 7

7. Dual loop fire detection and no fire extinguishing system.

Question 8

8. Five (six in the 322) fire extinguishing bottles are installed in the cargo fire system. How are the bottles fired when the discharge switch is pushed?

Answer 8

8.
Two bottles fire immediately.
After a 20-minute delay, the remaining bottles discharge through a filter/regulator.
If an airplane lands prior to the 20-minute delay, one bottle discharges at touchdown.
On the ground two bottles are discharged immediately, and after a time delay one remaining bottle discharges at a reduced flow rate.

Question 9

9. Each lavatory has a smoke detector installed. When smoke is detected, what indications alert the crew?

Answer 9

9. An aural sounds in the lavatory and the cabin.
   A lavatory call light flashes and the master call light on the associated attendant station illuminates EICAS advisory message SMOKE LAVATORY displays (200C/322)

Question 10

10. Manual testing of the fire and overheat detection system would give what indications?

Answer 10

10.
Master WARNING lights illuminate.
Fire bell sounds.
EICAS warning message
FIRE TEST IN PROG (followed by)
FIRE TEST PASS or FIRE TEST FAIL
LEFT and RIGHT engine fire switch lights illuminate.
APU fire switch light illuminates.
Nose wheel well APU fire warning light and horn.
FWD and AFT CARGO FIRE warning lights illuminate.
LEFT and RIGHT FUEL CONTROL switch fire warning lights illuminate

Question 11

11. What is indicated when the APU FIRE WARNING HORN sounds intermittently with the airplane on the ground?

Answer 11

11.
APU fire
APU fire test