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between the current aircraft track and the intercept radial exceeds 160 °.
PROCEDURE FOR DIR TO WAYPOINT
CASE 1. THE "TO" WAYPOINT IS IN THE FLIGHT PLAN
Example : DIR TO FRZ
PRESS the DIR key on the MCDU.
PRESS the line select key next to “FRZ”
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
CASE 2. THE "TO" WAYPOINT DOES NOT BELONG TO THE FLIGHT PLAN
Example : Direct to ABC (ABC being an ident, LL or PBD or PB/PB)
PRESS the DIR key.
WRITE the waypoint identifier (e.g. ABC) in the scratchpad.
PRESS [1 L] to enter “ABC” in the “DIR TO” field.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
Clear the discontinuity and the waypoints that are not included in the new flight plan.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
PARTICULAR CASES FOR USE OF DIR TO
If the pilot is flying a manual leg (part of a SID or STAR), the flight plan page displays “F‐-PLN
DISCONTINUITY”, preceded by “MANUAL” (See below).
These legs are specific heading or track legs flown with no defined end waypoint.
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
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
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.
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).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A330/A340 FLEET DSC-22_20-30-10-15 P 38/44
FCOM 19 AUG 10
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.
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.
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 1(81)
