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- the position of the ENG MASTER switch
- the position of the ENG MAN START pushbutton switch
- the position of the ENG 1(2) ANTI ICE pushbutton switch
- the aircraft status (flight or ground).
The FADEC receives its inputs from the Engine Interface Unit (ElU)
ARCHITECTURE ]
ON PEDESTAL
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┓
┃ ┃ ┃1.70.80 P 2 ┃
┃ ┃ ┣━━━━━┳━━━━━┫
┃I ~-~ A318 ┃l IGNITIONLAND STARTING ┃SEQ 005 1 ┃I REV 31 ┃
┃ aw aw ,, ~L,~ A319 ┃ ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃ ┃
┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━━┻━━━━━┻━━━━━┛
The ignition system is for engine starting on the ground and restarting in flight. It consists
of two identical independent circuits for each engine, normally controlled by the FADEC
channel A and channel B. Each FADEC channel can control both igniters.
┏━┳━━━━━━━━━━┳━━┓
┃| ┃ CHANNEL A ┃ ┃
┃ ┃- ^~ COMMAND ┃ ┃
┣━╋━━━━━━━━━━╋━━┫
┃J ┃~CH~ANNEL B ┃ y ┃
┃ ┃ ┃IGr ┃
┃ ┃ COMMAND ┃ ┃
┃ ┃ CHANNEL A ┃ ┃
┃ ┃- ~COM_MAND ┃ ┃
┣━╋━━━━━━━━━━╋━━┫
┃i ┃~ CH~ANNEL B ┃ y ┃
┃ ┃ ┃IGr ┃
┃ ┃ COMMAND ┃ ┃
┃ ┃ FADEC ┃ ┃
┗━┻━━━━━━━━━━┻━━┛
ITER A
ITER B
Note : Supply for igniter A switches to the STAT INV BUS BAR as soon as the static
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AIRBUS A320 Flight Crew Operating Manual5(169)
