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Location of TRU indication is shifted to right hand side of the scale when the ILS localizer
deviation scale is displayed.
HEADING
Applicable to: ,
(1) Heading Reference Line and Scale
A white scale on a grey background moves in front of a fixed yellow reference line to show the
actual magnetic heading.
(2) Selected Heading or Track Index (blue)
The pointer indicates the heading or track selected on the FCU HDG-TRK counter.
The index is replaced by digits on the right or on the left side of the scale, when the selected
value is off the scale.
If the FD pushbutton switch is OFF, a second heading or track symbol appears on the horizon
line and markers are displayed every 10 °.
(3) Actual Track Symbol
This symbol is a small green diamond.
(4) True heading (blue)
At high latitude above 82.5 ° North or 60.5 ° South (or entering the north, magnetic polar
region latitude 73.5 ° N and longitude between 117.5 ° W and 92.5 ° W), the ADIRUs replace
magnetic heading by true heading on the EFIS and DDRMI.
When the aircraft is in close proximity to these regions (latitude above 82 ° North or 60 ° South
or approaching the north polar region : 73 ° N and longitude between 90 ° W and 120 ° W), the
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON PFD
A330/A340 FLEET DSC-31-40 P 24/48
FCOM 19 AUG 10
ADIRU causes the "SELECT TRUE REF" message to appear on the ND, thereby requesting a
change in the north reference.
In true heading configuration at slats extension, "TRUE" will flash for 9 s then remain steady.
FLIGHT PATH VECTOR
Applicable to:
(1) Flight Path Vector (FPV)
This symbol appears when the pilot selects TRK/FPA on the FCU.
The flight path vector represents the lateral and vertical trajectory of the aircraft with respect to
the ground.
On the lateral ‐ scale it indicates the aircraft's track.
‐ On the vertical scale it indicates the aircraft's flight path angle.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON PFD
A330/A340 FLEET DSC-31-40 P 25/48
FCOM 19 AUG 10
Example: The aircraft flies a track of 009 (heading 360 °, wind from west) and descends with
a flight path angle of -7.5 °.
FLIGHT PATH VECTOR
Applicable to: ,
(1) Flight Path Vector (FPV)
This symbol appears when the pilot selects TRK/FPA on the FCU.
The flight path vector represents the lateral and vertical trajectory of the aircraft with respect to
the ground.
On the lateral ‐ scale it indicates the aircraft's track.
‐ On the vertical scale it indicates the aircraft's flight path angle.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON PFD
A330/A340 FLEET DSC-31-40 P 26/48
FCOM 19 AUG 10
Example: The aircraft flies a track of 009 (heading 360 °, wind from west) and descends with
a flight path angle of -7.5 °.
GUIDANCE
Applicable to: ALL
Two completely different flight director modes are available, each with its own characteristic symbols.
The symbol displayed corresponds to the basic operating reference the pilot has selected. – either
HDG V/S or TRK FPA.
In normal operation PFD1 displays FD1 orders.
If FD1 fails, PFD1 automatically displays FD2 orders, and on the PFD1 the FD2 indication in the right
column of the FMA flashes for a few seconds.
The same applies for FD2 orders normally displayed on PFD2.
IF THE CREW HAS SELECTED HDG V/S TO BE THE BASIC REFERENCE :
The PFD displays pitch and roll bars in green. They automatically move out of view at touchdown
in ROLL OUT mode.
They flash for 10 s and then remain steady in the following conditions :
‐ reversion to the HDG V/S basic mode (manually or automatic)
‐ change of selected flight level when the autopilot is already engaged in ALT CAPTURE mode
‐ loss of LOC or G/S in LAND mode or loss of LAND mode
‐ at the first AP or FD engagement
The PFD displays a yaw bar in green below 30 ft radio altitude if a localizer signal is available:
‐ during takeoff (in RWY mode)
‐ upon landing (in FLARE and ROLL OUT mode).
(1) FD Crossed Bars (green)
(2) Yaw Bar (green)
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
INDICATIONS ON PFD
A330/A340 FLEET DSC-31-40 P 27/48
FCOM 19 AUG 10
THE CREW HAS SELECTED TRK FPA AS THE BASIC REFERENCE :
An inertial flight path vector defines the aircraft's horizontal and vertical track, taking wind effect
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 3(71)
