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L3
NORM EMER ELEC
AC DC DC
BAT
AC
ESS
DC
ESS HOT
ADIRU 1 X HOT 1 (1)
AOA RESOLVER 1 X (2)
ADIRU 2 AC2-3
HOT 2
(1) during
5 min
AOA RESOLVER 2 AC2-3
ADIRU 3 AC1-2 X (3)HOT 2 (1)
ADIRU
AOA RESOLVER 3 AC1-2 X (2)
(1) Backup supply.
(2) AOA1 resolver power supply is lost, and AOA3 resolver power supply is recovered, when AC1 is lost and AIR DATA
CAPT ON 3 is selected.
(3)When AC1 is lost.
BUS EQUIPMENT LIST
Applicable to: ,
L3
NORM EMER ELEC
AC DC DC
BAT
AC
ESS
DC
ESS HOT
ADIRU 1 X HOT 1 (1)
AOA RESOLVER 1 X (2)
ADIRU 2 AC2
HOT 2
(1)during
5 min
AOA RESOLVER 2 AC2
ADIRU 3 AC1 X (3)HOT 2 (1)
ADIRU
AOA RESOLVER 3 AC1 X (2)
(1) Backup supply.
(2) AOA1 resolver power supply is lost, and AOA3 resolver power supply is recovered, when AC1 is lost and AIR DATA
CAPT ON 3 is selected.
(3)When AC1 is lost.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
ADIRS - ELECTRICAL SUPPLY
Intentionally left blank
A330/A340 FLEET DSC-34-10-40 P 2/2
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPS - DESCRIPTION
A330/A340 FLEET DSC-34-15-10 P 1/2
FCOM 19 AUG 10
DESCRIPTION
Applicable to:
The Global Positioning System (GPS) is a satellite based radio navigation aid.
Worldwide 24 satellites broadcast accurate navigation data that the aircraft can use for the precise
determination of its position.
The aircraft has two independent GPS receivers. Each consists of a GPS Sensor Unit (GPSSU) and
the associated antenna. The GPSSU processes the data received and transfers them to the ADIRUs,
which then perform a GP-IRS hybrid position calculation. The FMGCs use the hybrid position. The
GPS MONITOR page on MCDU1 or MCDU2 can display pure GPS position, true track, ground
speed, estimated position, accuracy level, and mode of operation for the information and use of the
flight crew.
Note: Flight crew can use the MCDU NAVAID page to deselect the use of GPS data for
calculating position. (Refer to DSC-22_20-50-10-20-F NAVAID/STORED NAVAID/NEW
NAVAID PAGES - NAVAID PAGE).
DESCRIPTION
Applicable to: ,
The Global Positioning System (GPS) is a satellite based radio navigation aid.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPS - DESCRIPTION
A330/A340 FLEET DSC-34-15-10 P 2/2
FCOM 19 AUG 10
Worldwide 24 satellites broadcast accurate navigation data that the aircraft can use for the precise
determination of its position.
The aircraft has two independent GPS receivers. Each GPS receiver is integrated in a modular
avionics unit called MMR (Multi Mode Receiver) (GPS1 receiver in MMR1, GPS2 receiver in MMR2).
The MMR processes the data received and transfers them to the ADIRUs, which then perform a
GP-IRS hybrid position calculation. The FMGCs use the hybrid position. The GPS MONITOR page
on MCDU1 or MCDU2 can display pure GPS position, true track, ground speed, estimated position,
accuracy level, and mode of operation for the information and use of the flight crew.
Note: Flight crew can use the MCDU NAVAID page to deselect the use of GPS data for
calculating position. (Refer to DSC-22_20-50-10-20-F NAVAID/STORED NAVAID/NEW
NAVAID PAGES - NAVAID PAGE).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPS - NORMAL OPERATION
A330/A340 FLEET DSC-34-15-20 P 1/4
FCOM 19 AUG 10
NORMAL OPERATION
Applicable to: ,
In normal operation, the GPS receiver 1 supplies ADIRU 1 and ADIRU 3, the GPS receiver 2
supplies ADIRU 2.
The MMR operates in different modes which are indicated on the GPS MONITOR page :
INITIALIZATION MODE (INIT)
When this mode is entered, the MMR hardware and software are initialized.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPS - NORMAL OPERATION
A330/A340 FLEET DSC-34-15-20 P 2/4
FCOM 19 AUG 10
ACQUISITION MODE (ACQ)
The MMR enters in this mode after power up or during long periods of lost satellite signal. It
remains in this mode until it is able to track at least four satellites, then transfers to NAV mode. To
enter navigation mode more quickly, the MMR uses initial position, time and altitude from IRS.
NAVIGATION MODE (NAV)
When the MMR can tracks 4 or more satellites, it enters NAV mode and continually supplies data
to the ADIRUs.
ALTITUDE AIDING (ALTAID)
If the MMR can track at least 4 satellites, it uses the GPS altitude and the IR altitude to calculate
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 3(119)
