Where are the engine fire loops?
Pylon nacelle
Engine core
Fan section
2 loops per engine, A & B
What arms the fire extinguishing squibs?
Pushing to release the ENG FIRE push button
What if both fire loops fail simultaneously?
FIRE warning is issued
(if the failures are within 5 seconds)
amber DISCH light
Bottle pressure has been lost by a fault or pilot selection
How many fire bottles per engine?
2
conduct of an engine fire test
• ENG 1 & 2 FIRE pb-sw check in and guarded
• AGENT 1 & 2 lights off
• ENG 1 & 2 TEST pb press and hold to check:
ENG FIRE pb lighted red
SQUIB & DISCH lights on
CRC & MASTER WARN
ENG 1(2) FIRE ECAM
ENG SD displayed
FIRE light on ENG panel on
What happens with a running APU and an APU fire is detected?
On the ground an APU EMER shutdown and bottle discharge happens, whereas there are no automatic functions while airborne.
How many fire extinguishing bottles are there in the cargo extinguishing system?
There is only 1 which has ducting to both FWD and AFT compartments, but the discharge can only be directed to one compartment.
After discharging the cargo fire extinguishing bottle what would the expected indication on the CARGO SMOKE panel be?
The SMOKE light and associated ECAM warning may persist due to the halon concentration in the cargo compartment.
