Term
| If the APU shuts down automatically with an engine running or in the air |
|
Definition
No, the crew will have to discharge it.
(FCOM Vol 2- Rev 2- 8.20.4) |
|
|
Term
| What happens when you pull the APU fire switch? |
|
Definition
1. SAFE Shuts the Door (???)
2. Arms the fire bottle Squib
3. Closes the bleed Air valves
4. Closes the Fuel valve
5. Trips the Electrical generator field and the generator breaker shuts down (if automatic shutdown does not occur)
6. Closes the air inlet Door
(FCOM ??? Vol 2) |
|
|
Term
| When is the APU fire switch lock automatically released? |
|
Definition
When a fire is detected.
(FCOM Vol 2, Rev 2- 8.20.3) |
|
|
Term
| Is it necessary to test the fire detection/protection systems during preflight? |
|
Definition
No.
(FCOM Vol 2, Rev 2- 8.20.6) |
|
|
Term
| Why is testing the fire system not required? |
|
Definition
Self test on power up and constant monitoring.
(FCOM Vol 2, Rev 2- 8.20.6) |
|
|
Term
| How many fire detection/overheat loops does each engine have? |
|
Definition
2
(FCOM Vol 2, Rev 2- 8.20.1) |
|
|
Term
| Does each engine have 4 detection loops? |
|
Definition
No, both the loops are both fire detection and overheat warning.
(FCOM Vol 2, Rev 2- 8.20.1) |
|
|
Term
| What causes a fire or overheat warning? |
|
Definition
Detection of the condition by both loops is required unless one loop has failed. If one loop has failed, detection by the other loop triggers the warning.
(FCOM Vol 2, Rev 2- 8.20.1) |
|
|
Term
| How many fire warning loops does the APU have? |
|
Definition
2
(FCOM Vol 2, Rev 2- 8.20.3) |
|
|
Term
| Do the APU loops have overheat protection? |
|
Definition
No, only fire detection....no overheat detection.
(FCOM Vol 2, Rev 2-2.20.3) |
|
|
Term
| How many loops are required to sense a fire for auto shut down of the APU? |
|
Definition
On the ground, only one loop....in the air with both loops functioning, both loops must be sensing fire. If one loop has a fault it will revert to single loop operation.
(FCOM Vol 2, Rev 2-8.20.3) |
|
|
Term
| What happens when you pull an engine fire switch? |
|
Definition
Arms both Squibs for discharge
Shuts off
Air
Fuel
Electrical
Hydraulic
Depressurizes the hydraulic pump
Disarms the respective thrust Reverser
(Mnemonic- SAFE HR)
(FCOM Vol 2, Rev 2- 8.10.1) |
|
|
Term
| What type of fire detection is used in the cargo compartment? |
|
Definition
Smoke detectors.
(FCOM Vol 2, Rev 2- 8.20.4) |
|
|
Term
| How many fire bottles are in the cargo fire protection system? |
|
Definition
|
|
Term
| What happens when you press either LWR FWD or LWR AFT CARGO Fire Arm Switch? |
|
Definition
1. Turns off both recirculation fans
2. Turns off the lavatory/galley vent fans
3. Turns off cargo heat in respective compartment.
4. Turns off electrical power outlets in respective compartment
5. Commands pack to supply air to flight deck and supernumerary areas
6. Arms all cargo fire extinguisher bottles
7. Arms the selected compartment extinguisher valve
8. Puts the equipment cooling system into the override mode
9. Turns off cargo air conditioning in respective compartment
10. Turns off the Nitrogen Generation System (N/A on N704GT)
(FCOM Vol 2, Rev 2- 8.10.3) |
|
|
Term
| When fighting a lower cargo fire, what is the bottle discharge sequence? |
|
Definition
IN FLIGHT- 2 bottles discharge immediately under high flow the other 3 bottles are discharged at a reduced rate starting 15 minutes later.
If the airplane lands before the bottles are discharged, one of the 3 remaining bottles discharges at the reduced rate on touchdown.
ON THE GROUND- 2 bottles discharge immediately
only one of the remaining bottles discharge after a time delay.
(FCOM Vol 2, Rev 2- 8.20.5) |
|
|
Term
| What fire detection/suppression is available in the wheel well? |
|
Definition
Fire detection only in the main wheel well.
(There is no detection/ suppression in the nose wheel well.)
There are dual fire detection loops in the main wheel well.
(FCOM Vol 2, Rev 2- 8.20.4) |
|
|
