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It consists of two identical independent circuits for each engine, normally controlled by the FADEC’s
channel A, with channel B on standby. Each FADEC channel can control both igniters.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
IGNITION AND STARTING - IGNITION SYSTEM
A330/A340 FLEET DSC-70-80-20 P 2/4
FCOM 19 AUG 10
IGNITION FOR STARTING
Applicable to:
ON GROUND
During an automatic start only one igniter is supplied. The FADEC automatically alternates the
igniters used on successive starts.
The ignition is automatically selected, when N2 reaches 16 %.
It is automatically cut off, when N2 reaches 50 %.
During a manual start, both igniters are supplied, when the engine MASTER switch is ON.
Both stop firing, when N2 reaches 50 %.
IN FLIGHT
Both igniters are supplied, when the engine MASTER switch is ON.
IGNITION FOR STARTING
Applicable to: ,
ON GROUND
During an automatic start only one igniter is supplied. The FADEC automatically alternates the
igniters used on successive starts, and also the power supply source.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
IGNITION AND STARTING - IGNITION SYSTEM
A330/A340 FLEET DSC-70-80-20 P 3/4
FCOM 19 AUG 10
When residual EGT is above 100 °C, the engine is cranked until the EGT decreases below 100 °C,
and, then, both igniters are supplied.
Note: In case of automatic restart attempts following an automatic start abort, both igniters are
supplied when the EGT decreases below 150 °C.
The ignition is automatically selected, when N3 is between 25 % and 30 %.
It is automatically cut off, when N3 reaches 50 %.
During a manual start, both igniters are supplied, when the engine MASTER switch is ON.
Both stop firing, when N3 reaches 50 %.
IN FLIGHT
Both igniters are supplied by the AC ESS BUS, when the engine MASTER switch is ON.
CONTINUOUS IGNITION
Applicable to:
Continuous ignition is either selected manually or automatically to protect engine combustion.
Note: When the compressor delivery pressure (PS3) is high, the igniters are not excited, even if
the continuous ignition is selected and IGN is displayed in green on the ECAM.
MANUAL SELECTION
In flight, continuous ignition is selected, when the ENG START selector is on IGN/START,
provided the assigned engine is running.
On ground, after starting, since ignition is automatically cut off, to select continuous ignition, turn
the ENG START selector to NORM, then back to IGN/START.
AUTOMATIC SELECTION
CONTINUOUS IGNITION
Applicable to: ,
Continuous ignition is either selected manually or automatically to protect engine combustion.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
IGNITION AND STARTING - IGNITION SYSTEM
A330/A340 FLEET DSC-70-80-20 P 4/4
FCOM 19 AUG 10
MANUAL SELECTION
In flight, continuous ignition is selected, when the ENG START selector is on IGN/START,
provided the assigned engine is running.
Only one igniter is selected. If failed, both igniters are automatically selected.
On ground, after starting, since ignition is automatically cut off, to select continuous ignition, turn
the ENG START selector to NORM, then back to IGN/START.
AUTOMATIC SELECTION
Continuous ignition (igniters A + B) is automatically selected :
‐ if engine anti-ice is selected on and relevant EIU is inoperative
‐ for 10 s in the event of engine flame out condition detected by the FADEC
‐ for 10 s in the event of inadvertent cycling of the Master lever with the engine running provided
N3 is above 50 %.
AUTO RELIGHT FUNCTION
Applicable to: ,
If the FADEC detects a flame-out condition on ground, or in flight, both igniters A + B will be
automatically energized for 10 s.
QUICK RELIGHT FUNCTION
Applicable to: ,
In case of a flame-out in flight, provided the MASTER switch is selected OFF, then ON, within
30 s and N3 is above 10 %, the quick relight function will immediately open the HP fuel valve and
energize both igniters A + B, regardless of the ENG START selector position.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
POWER PLANT
IGNITION AND STARTING - ENGINE STARTING SYSTEM
A330/A340 FLEET DSC-70-80-30 P 1/10
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
The engine starting system consists of an air turbine starter and a start valve.
The start valve admits air supplied by the pneumatic system to operate the starter.
The FADEC electrically controls the start valve. On ground, in the event of an electrical control
　
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