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When the pilot encount‐ers a flight plan discontinuity, or if a major reset occurs, the flight plan
page displays “PPOS - F-PLAN DISCONTINUITY”, and the pilot looses managed guidance in
both the lateral and vertical plans.
The autopilot or flight director reverts to the basic HDG V/S (or TRK FPA) modes. Predictions
remain available and are based on the assumption that the aircraft will fly a direct leg from its
present position to the next waypoint.
‐In both of these cases, the only way to get back to a standard flight plan is to perform a
“DIR TO” a designated waypoint.
Note: During cruise, the DIR TO function is not available as long as uplink wind data, received
through ACARS or ATSU , is not inserted or cancelled on the CRUISE WIND page.
PROCEDURE FOR DIR TO/ABEAM
Example : DIR TO/ABEAM to BEROK
PRESS the DIR key on the MCDU.
WRITE the waypoint identifier in the scratchpad (Here : BEROK).
PRESS [1 L] to enter the waypoint in the DIR TO field.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A330/A340 FLEET DSC-22_20-30-10-10 P 35/40
FCOM 19 AUG 10
SELECT the ABEAM PTS function
The display reverts to F-PLN A page.
Note: 1. If between the two waypoints projected on the direct leg, there was a discontinuity in
the original flight plan, this discontinuity disappears between the corresponding abeam
points on the direct leg.
2. If the pilot enters a latitude/longitude type reference waypoint, the system renames the
abeam point with its recomputed coordinates (only in degrees).
PROCEDURE FOR DIR TO/INTERCEPT
PRESS the DIR key.
WRITE the waypoint identifier in the scratchpad.
PRESS [1L] to enter the waypoint in the DIR TO field.
In the [1R] and [2R] field, the MCDU displays the functions radial inbound and radial outbound
from the waypoint.
If the waypoint belongs to the flight plan, the system displays the track of the flight plan as
defaulted radial inbound. The crew can modify it.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A330/A340 FLEET DSC-22_20-30-10-10 P 36/40
FCOM 19 AUG 10
WRITE the required in or out radial in the scratchpad.
PRESS [1R] or [2R] key to enter the radial in the required field.
The ND displays the entered radial in amber dotted line : the pilot can still modify it.
PRESS [1R] or [2R] key to confirm the DIR TO/INTERCEPT selection.
The display reverts to F-PLN A page, the system arms the NAV mode, and engages HDG mode.
The FROM waypoint is the aircraft position at the time of the DIR TO/INTERCEPT selection. The
MCDU indicates it as INBND or OUTBND.
Note: 1. If the waypoint does not belong to the flight plan, the system strings the DIR
TO/INTERCEPT leg to this waypoint, and inserts a discontinuity following the
waypoint.
2. A DIR TO/INTERCEPT cancels any active offset.
3. If the current AP/FD lateral mode is HDG or TRK, NAV becomes armed.
If the NAV mode was engaged, NAV becomes armed. FCU HDG or TRK must be
used to guide the aircraft.
The ND displays an intercept point, if the intercept angle is less than 120 °. The
system constantly updates it to reflect the current aircraft track and position with
respect to the intercept radial. The NAV mode engages when reaching the intercept
point.
EXAMPLE : RADIAL INBND
DIR TO AMB - RADIAL 200 ° INBOUND
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A330/A340 FLEET DSC-22_20-30-10-10 P 37/40
FCOM 19 AUG 10
EXAMPLE : RADIAL OUTBND
DIR TO AMB - RADIAL 200 ° OUTBOUND
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A330/A340 FLEET DSC-22_20-30-10-10 P 38/40
FCOM 19 AUG 10
OVFY (OVERFLY) KEY
Applicable to: ,
The overfly key programs the Flight Management Guidance Computer to fly over a specific waypoint
or navaid. To use it :
PRESS the “OVFY” key.
A “ ” appears in the scratchpad.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A330/A340 FLEET DSC-22_20-30-10-10 P 39/40
FCOM 19 AUG 10
INSERT it, by pressing the key adjacent to the waypoint to be overflown. [3L] in this example.
The pilot cannot cancel the overfly program. If you do not want to fly over the point you have entered,
use DIR TO (direct to) the next waypoint or engage the heading mode, whichever is more suitable.
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 1(72)
