Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-43
26-Jul-2017
FIRE PROTECTION
The following aircraft components are protected by the fire detection and protection system:
• Engines
• Auxiliary power unit, APU
• Forward and aft cargo compartment
• Main wheel well
• Lavatories
Fire detection is indicated by aural and visual warnings as well as EICAS warnings.
The engines, APU, forward and aft cargo compartment are monitored by the same fire detection and
extinguishing system (called FIDEEX).
Fire loops, installed in the engines and the APU, indicate a fire and trigger the respective fire warning. To
extinguish a fire, the engines are equipped with two FIREX bottles. Each bottle contains two squibs of halon
which is injected with 600 PSI into the engine when triggered by the pilot. There is another bottle with just one
squib for extinguishing APU fires.
ENGINE FIRE CONTROLS & MESSAGES
On the pilot’s side, only the left engine fire controls are available, the right hand of the glare shield there are
controls for both engines (shown here)
1. LH/RH FIRE PUSH: Red light
indicates a fire was detected. Press
to isolate the engine from the fuel
transfer, hydraulic, bleed air
systems. This results in an engine
shut down.
2. BOTTLE 1/2 DISCHARGE: Press to
discharge, green light indicates the
squib is armed and bottle is
charged.
ECAM MESSAGE
• L/R ENG FIRE WARNING (red): Engine fire detected
• L/R ENG SQB CAUTION (amber): Appears when either or both bottles have fired or have failed
• L/R FIRE FAIL CAUTION (amber): Indicates a failure in either fire detection system
• ENG BTL1/2 CAUTION (amber): Indicates respective bottle was discharged
• L/R ENG SQB STATUS (white): Appears when either or both bottles have fired or have failed