Fire protection

Question 1

What happened if the engine fire lights on the overhead panel do not illuminate during the engine fire push button test?

Answer 1

In case of engine one, it means that the fire detection loop A has failed. In case of engine number two, it means that the fire detection loop B has failed.

Question 2

What happens if the air purifier test is performed on the ground with batteries only?

Answer 2

1.The SQUIB light and DISCH light come on without ECAM warning. 

2.) The red APU fire pushbutton switch partially comes on as one of the sets of bulbs is not electrically available.

Question 3

After how long does the apu fire extinguisher automatically discharge on the ground?

Answer 3

3 sec after detection of the fire warning

Question 4

What happens if you press the APU auto extinguisher test pushbutton switch when the APU is running?

Answer 4

It shuts down