A320 Lounge Fire Flashcards
Where do we have fire detection and extinguishing?
Engine and APU
Where are the fire detection loops?
Engine pylon
Nacelle
Core
For APU and for engine
What is the logic of the fire detection loops?
If both of them detect high temperature
Or if one failed and other one detects high temperature
Or both loops fail within 5 seconds of each other
Then FWC detects a fire in that area, generating master warning
How are fire detection loops powered?
DC busses
ENG 1 loop A - DC ESS
ENG 1 loop B - DC 2
ENG 2 loop A - DC 2
ENG 2 loop B - DC ESS
APU loop A - DC BAT BUS
APU loop B - DC BAT BUS
Which fire detection loops are powered by DC ESS BUS?
ENG 1 loop A
ENG 2 loop B
Which fire detection loops are powered by DC BUS 2?
ENG 1 loop B
ENG 2 loop A
Which fire detection loops are powered by DC BAT BUS?
APU loop A
APU loop B
Which DC BUS powers fire detection for ENG 1 loop A?
DC ESS BUS
Which DC BUS powers fire detection for ENG 1 loop B?
DC 2 BUS
Which DC BUS powers fire detection for ENG 2 loop A?
DC 2 BUS
Which DC BUS powers fire detection for ENG 2 loop B?
DC ESS BUS
Which DC BUS powers fire detection for APU loop A?
DC BAT BUS
Which DC BUS powers fire detection for APU loop B?
DC BAT BUS
How many bottles of extinguishing agent are there per engine, and how many squibs?
2 bottles per engine, and each has 2 squibs
What happens when you press AGENT 1?
It fires both squib A and squib B for bottle 1
In EMER ELEC config, how many extinguishing bottles are available? Why?
Only 1 bottle, which is bottle 1. This is because both squibs in bottle 2 are powered by DC BUS 2
In engine fire extinguishing, what is squib A for bottle 1 powered by?
BAT 1 HOT BUS
In engine fire extinguishing, what is squib B for bottle 1 powered by?
BAT 2 HOT BUS
In engine fire extinguishing, what is squib A for bottle 2 powered by?
DC 2 BUS
In engine fire extinguishing, what is squib B for bottle 2 powered by?
DC 2 BUS
In APU fire extinguishing, what is squib A for bottle 1 powered by?
BAT 1 HOT BUS
In APU fire extinguishing, what is squib B for bottle 1 powered by?
DC BAT BUS
In APU fire extinguishing, what is squib A for bottle 2 powered by?
Trick question - APU has only 1 bottle
How are the squibs armed?
By pushing the engine fire push button
Why do we check for the red dot on the APU during the walkaround?
To check that the APU hasn’t autoextinguished
What do you need for APU autoextinguishing?
DC BAT BUS has to be energised
