Fire protection

Question 1

How many fire bottles do the engines have?

Answer 1

two

Question 2

How many fire bottles in the apu?

Answer 2

1

Question 3

Eng fire detection, is it still available is a single loop fails?

Answer 3

yes

Question 4

What happens when a fire switch is released out?

Answer 4

LP fuel valve closes, hydraulic fire shutoff valve closes, eng bleed valve closes, pack flow control valve closes, fadec cuts off, IDG is de-energized. aural fire warning is silenced, and fire extinguishing squibs are armed.

Question 5

What does the DISCH in amber mean on the fire agent pbs

Answer 5

it has lost pressure/been discharged

Question 6

What are the differences between APU fire protection in flight and on the ground?

Answer 6

On the ground, it’s all auromatic, apu shuts down and squibs discharge. On the ground it must be done by the pilot like other engines.

Question 7

What does a dirty sock smell indicate?

Answer 7

apu or engine oil leak