08 - Fire Protection

Question 1

FIRE PROTECTION

1. Which areas of the aircraft have fire extinguishing capability?

Answer 1

• Engines
• APU
• Lower Cargo Compartments

Question 2

2. What fire protection functions are available without battery power?

Answer 2

None

Question 3

3. Can you discharge the fire bottles using only battery power?

Answer 3

Yes

Question 4

4. How is the fire warning bell silenced?

Answer 4

Pressing either Master FIRE WARN button or BELL CUTOUT

Question 5

5. How is an engine fire extinguished?

Answer 5

By pulling the respective Fire Switch and rotating it. This discharges one of two halon bottles

Question 6

6. Which systems are affected by pulling an engine fire switch and how are they affected?

Answer 6

• Closes spar fuel shutoff and engine fuel shutoff valves
• Bleed valve & pack valve closed
• Trips the generator control relay & breaker
• closes hydraulic shutoff valve
• Arms one squib on each bottle
• Allows the engine fire switch to be rotated
  -Reverser is disabled

Question 7

7. How is a dual loop failure of an Engine Fire Detection System indicated?

Answer 7

An amber FAULT light on the Overheat/Fire Protection Panel

Question 8

8. How many fire extinguishing bottles are provided for the APU?

Answer 8

One

Question 9

9. Does the APU have automatic fire extinguishing?

Answer 9

No

Question 10

10. What happens when pulling the APU fire switch?

Answer 10

• provides a backup to the automatic shutdown feature
• closes the APU fuel shutoff valve
• closes the APU bleed air valve
• closes the APU air inlet door
• 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 11

11. Where is the APU Fire Ground Control panel located?

Answer 11

Right main wheel well

Question 12

12. What does placing the fire detection TEST switch to FAULT/INOP test?

Answer 12

The systems ability to detect a fault or inop equipment within itself

Question 13

13. What does placing the fire detection TEST switch to OVHT/FIRE test?

Answer 13

The overheat and fire detection loops on both engines

Question 14

14. What is indicated by the illumination of the DETECTOR FAULT light on the CARGO FIRE
    panel?

Answer 14

One or more detectors in the Lower Cargo Compartment Fire Detection System has failed

Question 15

15. What fire protection and extinguishing equipment is available in the lower cargo compartments?

Answer 15

2 halon for suppression bottles, one HRD and one LRD