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automatically and discharges extinguishing agent.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FIRE PROTECTION
ENGINE AND APU - DESCRIPTION
A330/A340 FLEET DSC-26-20-10 P 3/4
FCOM 19 AUG 10
EXTINGUISHING
Applicable to: ALL
Each engine has two extinguisher bottles equipped with electrically operated squibs to discharge
their contents. Each squib has a dual electric supply. The flight crew controls the discharge from the
ENG FIRE panel in the cockpit.
The APU has one fire extinguisher bottle that has an electrically operated squib to discharge its
agent. The flight crew controls the discharge from the APU FIRE panel in the cockpit. This bottle also
discharges automatically if there is an APU fire when the aircraft is on the ground.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FIRE PROTECTION
ENGINE AND APU - DESCRIPTION
A330/A340 FLEET DSC-26-20-10 P 4/4
FCOM 19 AUG 10
FIRE WARNINGS AND LOOP CAUTIONS
Applicable to: ALL
Fire detection units process all the warnings and cautions originating in the sensing elements :
The ‐ fire warning appears in case of :
• a fire signal from both loop A and B or,
• a fire signal from one loop when the other is faulty, or
• breaks in both loops occuring within 5 s of each other (flame effect), or
• a test performed on the control panel.
‐ The loop-fault cautions appear if :
• one loop is faulty or,
• both loops are faulty or,
• the fire detection unit fails.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FIRE PROTECTION
ENGINE AND APU - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-26-20-20 P 1/8
FCOM 19 AUG 10
OVERHEAD PANEL
Applicable to:
ENG FIRE PANEL
The aircraft has four identical ENG FIRE panels, which contain the following switches and
indicators and include a single TEST pushbutton :
(1) ENG 1 (2, 3, 4) FIRE pb
This pushbutton's normal position is in, and guarded.
The pilot pushes it to release it. It pops out, sending an electrical signal that performs the
following for the corresponding engine :
‐ Silences the aural fire warning
‐ Arms the fire extinguisher squibs
‐ Closes the low-pressure fuel valve
‐ Closes the engine fuel return valve
‐ Closes the hydraulic fire shut off valve
‐ Closes the engine bleed valve (on the related and adjacent engine)
‐ Closes the pack flow control valve
‐ Cuts off the FADEC power supply
‐ Deactivates the IDG.
ENG 1 (2, 3, 4) FIRE lt
This red light comes on, regardless of the pushbutton's position, whenever the fire warning
for the corresponding engine is activated.
(2) AGENT 1 and AGENT 2 pb
Both of these pushbuttons become active when the flight crew pops the ENG FIRE button for
the associated engine.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FIRE PROTECTION
ENGINE AND APU - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-26-20-20 P 2/8
FCOM 19 AUG 10
A brief push on the pushbutton discharges the corresponding fire bottle.
‐ "SQUIB" comes on white when the flight crew pops the ENG FIRE button for its engine to
help the flight crew identify the AGENT pushbutton to be activated.
‐ "DISCH" comes on amber when its fire extinguisher bottle has lost pressure.
(3) TEST pb
This pushbutton permits the flight crew to test simultaneously the operation of the fire
detection and extinguishing system for the four engines.
When the flight crew presses it :
‐ A continuous repetitive chime sounds.
‐ The MASTER WARN lights flash.
‐ ENG FIRE warning appears on ECAM.
‐ On the FIRE panel :
• The ENG FIRE pushbutton comes on red.
• The SQUIB lights come on white if discharge supplies are available.
• The DISCH lights come on amber.
‐ On the ENG panel (pedestal) :
• The FIRE lights come on red.
OVERHEAD PANEL
Applicable to: ,
ENG FIRE PANEL
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FIRE PROTECTION
ENGINE AND APU - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-26-20-20 P 3/8
FCOM 19 AUG 10
The aircraft has two identical ENG FIRE panels, which contain the following switches and
indicators and include a single TEST pushbutton :
(1) ENG 1 (2) FIRE pb
This pushbutton's normal position is in, and guarded.
The pilot pushes it to release it. It pops out, sending an electrical signal that performs the
following for the corresponding engine :
‐ Silences the aural fire warning
‐ Arms the fire extinguisher squibs
　
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