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The pilot accesses the HOLD page from a lateral revision at the present position (PPOS) or at a
waypoint. The MCDU displays HOLD-associated data : inbound course (INB CRS),
TURN direction, TIME/DISTANCE and LAST EXIT time, and fuel to reach the alternate with the
required fuel reserve.
SELECT lateral revision at present position (PPOS) or at applicable waypoint.
PRESS HOLD prompt, [3L] key.
CHECK and (if necessary) MODIFY the HOLD data.
CHECK the temporary flight plan and INSERT it, if appropriate.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
PROCEDURE TO DELETE A HOLD (HOLD WITH MANUAL TERMINATION)
CLEAR the HOLD directly in the flight plan as it can be done for a normal waypoint.
HOLDING PATTERN
Applicable to:
OFFSET
Applicable to:
Offset allows the pilot to define a lateral offset to the left or right of the active flight plan.
Once inserted, the offset applies from present position (PPOS) all along the flight plan to the first
waypoint (WPT) at which a holding pattern is defined, or to the last waypoint before the runway.
In most cases, the pilot will use it en route because of an ATC clearance or to avoid bad weather
expected along the flight-plan route.
Accessed from lateral revision (LAT REV) at the present position page, an offset may be defined
between 1 and 50 nm in one-nautical-mile steps.
After inserting the offset in the flight plan, the flight plan page shows OFST in its title, and the
navigation display shows the offset flight plan in a solid green line and the original flight plan in a
dashed green line.
The offset is cleared :
Automatically (holding pattern, approach)
Manually with the clear (CLR) key.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
Note: If the pilot enters an OFFSET when the aircraft is too close to the TO waypoint, the FMGS
may refuse to accept it, in which case the MCDU displays the message “ENTRY OUT OF
RANGE”.
INSERTING AN OFFSET
SELECT LAT REV at FROM waypoint.
WRITE the required offset value and direction (for example, L5 or 5L).
PRESS [2L] to enter the offset into the OFFSET field.
PRESS [6R] to activate the OFFSET.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
A318/A319/A320/A321 FLEET DSC-22_20-30-10-10 P 20/32
FCOM 19 AUG 10
MANUAL CANCELLATION OF OFFSET
There are two normal methods for cancelling an offset :
1. SELECT DIR TO a waypoint (the next waypoint, for example)
2. SELECT a Lateral Revision (LAT REV) at FROM WPT
CLEAR THE OFFSET field.
PRESS [6R] to activate the temporary flight plan (cancelling OFFSET).
OFFSET
Applicable to:
ALTERNATE FUNCTION
Applicable to:
The ALTERNATE FUNCTION performs two actions :
It reviews and defines alternate airports and ‐ inserts them into the flight plan.
‐ It allows a diversion to be activated through the ENABLE ALTN command.
REVIEW AND SELECTION OF ALTERNATE AIRPORT
Several alternate airfields may be stored in the data base and assigned to a destination.
When the pilot selects a company route (CO RTE) (or a city pair), the computer strings the
preferred alternate into the active flight plan.
The pilot may review the alternate airports on the ALTN page, and if the one selected is not
suitable because of weather or fuel considerations, another alternate may be strung into the active
flight plan.
The pilot may define an additional alternate airport into the list, if necessary.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
FLIGHT PLANNING - LATERAL FUNCTIONS
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FCOM 19 AUG 10
The ALTERNATE page shows the track and distance (airway or direct) between the destination
and the alternate, as well as fuel management data (EXTRA fuel, assuming the associated airfield
is the alternate airport). This data will help the pilot change the preferred alternate, if necessary.
Access the ALTERNATE page through the ALTN prompt on LAT REV at destination.
Alternate airfields are attached to the destination.
ENTERING NEW ALTERNATE INTO THE F-PLN
If the preferred alternate is not suitable, proceed as follows :
SELECT the F-PLN key on MCDU
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 1(89)
