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‐ mechanical failure is not detected by the LGCIU. The effect on the interfaced system depends on
which condition is incorrectly signalled.
In case of LGCIU electrical failure :
‐ The landing gear is controlled by the remaining healthy LGCIU
‐ The outputs of the failed LGCIU are not forced to the safe (flight) position :
• some users will see “flight” condition,
• some other will see “ground” condition.
LANDING GEAR - AIRCRAFT SYSTEM INTERFACE
Applicable to: ALL
The two LGCIUs provide following discrete logic signals to various aircraft systems.
A semicolon (;) separates different signals send to the same system.
Two additional discretes are provided by the LGCIUs.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
GEARS AND DOORS - LANDING GEAR SYSTEM INTERFACE
A330/A340 FLEET DSC-32-10-20 P 2/4
FCOM 19 AUG 10
OP : Applicable LGCIU is signalled operative as long as system is supplied by power.
E : External power connected.
SYSTEMLGCIU 1
OUTPUT
LGCIU 2
OUTPUT
Packs bay ventilation L-F R-G
Avionics equipment ventilation R-G L-G ; OP
Fwd and aft cargo compartment vent. R-F
Pressure control and monitoring R-G R-G
Pack control and indicating L/R-G
AIR COND
Cockpit and cabin temperature control R-G
FM FMGS N-C N-C
HF System L-F R-F
VHF System L-F L/R-F
Satellite communication R-F
Cockpit to ground crew call system N-NC
Audio management L-F
CVR N-C/NC
CIDS N-C/D ; E N-C/D ; E
COMMUNICATIONS
Radio management L-F L/R-F
AC main generation N-C
AC emergency generation N-NC
ECMS N-C
DC essential normal generation switching N-NC
Battery DC generation N-C
GPCU N-C
ELEC
Circuit breaker monitoring N-C
APU Control and monitoring L-G
APU generator (GCU) N-C
Engine fire and overheat protection L/R-G L/R-G
APU fire and cargo compartment overheat detector M-G M-G
Cargo compartment smoke detector N-C ; E N-C ; E
FIRE
APU fire extinguishing M-G
Flaps control and monitoring M-G M-G
Slats control and monitoring M-G M-G
FLT CTL
EFCS L/R-D ; N-C L/R-D ; N-C
FUEL APU fuel pump system M-G
FCMS L-D ; N-C L-D ; N-C
HYD Green main hydraulic power M-G M-G
ICE Wing ice-protection M-F M-F
Probe ice-protection L/R-G ; E
N-C ; OP
L/R-G ; E
N-C ; OP
To be continued on next page
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
GEARS AND DOORS - LANDING GEAR SYSTEM INTERFACE
A330/A340 FLEET DSC-32-10-20 P 3/4
FCOM 19 AUG 10
Continued from previous page
SYSTEMLGCIU 1
OUTPUT
LGCIU 2
OUTPUT
Windscreen anti-icing and defogging L/R-G L/R-G
FWC - acquisition interface R-G L-G
SDAC - acquisition interface R-G L-G
EIS
DMC - acquisition interface R-G L-G
Normal extension and retraction R-G ; E R-G ; E
Normal braking L/R-G ; N-C/D R-G ; N-D
GEAR
Brake cooling L-D
Runway turn off lights N-D N-D
Taxi and take off lights N-D N-D
LIGHTS
Logo lights M-G
Toilet system N-C
Sensors N-C
Altitude and airspeed standby data L-G
ILS L-F R-F
Weather radar system L-F R-F
Radio altimeter L-F L-F
TCAS L-G/D
GPWS L-D
DME L-F R-F
ATC/MODE S L-G R-G
ADF L-F R-F
NAVIGATION
VOR/MARKER L-F R-F
MAIN CMS acquisition interface N-C ; E
Up and down data loading system R-G
DOOR Doors and escape slide control system N-C ; E N-C ; E
ENG FADEC L/R-G ; DP
N-C
L/R-G ; DP
N-C
The following systems get landing gear position selection data from the landing gear lever
SYSTEML/G lever position
Refuel on battery DOWN
FCMS DOWN
Normal braking UP
Cabin emergency lighting UP
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
GEARS AND DOORS - LANDING GEAR SYSTEM INTERFACE
Intentionally left blank
A330/A340 FLEET DSC-32-10-20 P 4/4
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
GEARS AND DOORS - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-32-10-30 P 1/8
FCOM 19 AUG 10
LDG GEAR INDICATOR PANEL
Applicable to:
Connected to LGCIU 1 which receives signals from proximity detectors.
UNLK light : illuminates red if the landing gear is not locked in selected position.
▹􀀃lights􀀃:􀀃illuminate􀀃green􀀃if􀀃the􀀃landing􀀃gear􀀃is􀀃locked􀀃down.􀀃
　
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