FCOM: 26 - Fire Protection Flashcards
1
Q
When the fire push button is pushed (& released), what actions occur?
A
FLAB SHIP:
FADEC power - isolated
Low pressure fuel valve - closed
Aural warning - silenced
Bleed valve - closed
Squibs - armed
Hydraulic fire shut off valve - closed
IDG - deactivated
Pack flow valve - closed
25/08/2024
2
Q
Explain the fire detection system.
A
The engines and APU have:
- 2 loops, “A” & “B”
- Fire Detection Unit
Once A+B senses heat above a TEMP the fire warning is triggered.
The loops consist of 3 sensing elements in the engine and 1 sensing element in the APU compartment.
Once an sensing element detects heat a signal is sent to the FDU.
01/11/24
