Fire

Question 1

How many loops to detect an APU fire for it to automatically shutdown in attended or unattended modes?

Answer 1

2 in the air, 1 on the ground

Question 2

What happens if you get an AFT CARGO FIRE warning in flight

Answer 2

The 2 high rate bottles discharge automatically and the 3 low rates discharge after 15 mins slowly

Question 3

On the ground, how many bottles will go into the hold?

Answer 3

Both high rate and one low rate

Question 4

Why if the fire extinguisher system is automatic for the cargo holds, do you need to push the cargo fire button?

Answer 4

To reduce airflow to the cargo hold:

It does things like turns the lower recirc fans off, decreases flow from the packs, IFE cooling off etc

Question 5

If you get a cargo fire warning on the ground, is extinguishing automatic

Answer 5

No

Question 6

For the cargo fire suppression system, when does the DISCHARGE light come on?

Answer 6

As soon as the 2 high rate bottles are discharged

Question 7

Are the wheel well, engine and apu fire loops dual channel or singlle?

Answer 7

Dual