Fire Protection

Question 1

How is fire detected in the engines?

Answer 1

Two fire detection loops

Question 2

How many fire extinguishing bottles does each engine have?

Answer 2

Two halon bottles per engine, and one halon bottle for the APU.

Question 3

How many fire extinguishing bottles are available for the cargo compartments?

Answer 3

Two halon bottles for all compartments

Question 4

When does the fire detection unit (FDU) generate a fire warning? 

Answer 4

• both engine fire detection loops, detect a fire
• One loop has failed, and the remaining loop detect a fire
• both loops have failed within seconds of each other,

Question 5

What six things happen when a fire is detected?

Answer 5

• The continuous repetitive chime
• The master warning illuminates
• The ENG ONE FIRE and Land ASAP red ECAM warnings
• Engine SD page appears
• Engine master switch fire warning light illuminates
• Engine fire pb illuminates

Question 6

What happens when the fire push button is released?

Answer 6

• continuous repetitive chime is silenced
• hydraulic fire valve closes
• low pressure engine fuel valve closes
• electrical generator deactivates
• Pack flow control valve is closed
• Engine bleed valve closes
• FADEC is unpowered
• both fire bottle squibs arm

Question 7

What is indicated if the red disc is missing in the APU area of the back of the aircraft?

Answer 7

The agent has discharged overboard due to bottle over pressure

Question 8

What occurs if the APU fire push button is pushed?

Answer 8

• CRC silences
• Master Warning turns off
• Low pressure fuel valve closes
• APU fuel pump deactivates
• APU generator deactivates
• APU bleed valve closes
• cross bleed valve closes
• squib is armed in the APU bottle
• APU shuts down

Question 9

What occurs if an APU fire happens on the ground?

Answer 9

• Warning sound at nose wheel
• Red APU fire light illuminates at nose wheel
• APU shuts down automatically
• APU extinguisher activates automatically

Question 10

How many smoke detectors does the forward cargo compartment have?

Answer 10

Two smoke detectors

Question 11

How many smoke detectors does the aft cargo compartment have?

Answer 11

Four smoke detectors

Question 12

If bottle one and two are used to extinguish a fire in the forward cargo compartment, how many fire extinguishing agents are available for the aft cargo compartment?

Answer 12

None