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‐ Therefore, the pilot should only use “UPDATE AT” in case of a major position problem, such as :
• On the ground, no flight plan appears on the navigation display and ARC/ROSE NAV mode is
selected .
• A “CHECK IRS/FM POSITION” message appears on the MCDU.
• A “FM/IR POSITION DISAGREE” message appears on the ECAM.
When GPS PRIMARY is operative, the FM position will always converge towards the GPS position at
a rate depending on the aircraft altitude. Therefore, when GPS PRIMARY is operative, an inaccurate
“update at” will have a temporary effect on the FM position.
CHANGING THE DEPARTURE/ARRIVAL
Applicable to:
,
,
MSN,,
4538,,
CHANGING THE ARRIVAL
In approach, the flight crew may be assigned a new arrival procedure or landing runway, while
already flying the initially selected arrival. Usually, at that point, the aircraft will still be in a part
of the arrival that is common to the old and new procedure. When the new arrival or runway
is selected, the FMS strings the remaining part of the new procedure, after the current “TO”
waypoint, (see picture below).
All the lateral pilot modifications (including Holds) made to the previous arrival procedure are
erased. This includes modifications made to the “TO” waypoint. The vertical pilot modifications
(such as speed/altitude constraints) are kept on the waypoints in the common part (including the
“TO” waypoint).
If a hold had been inserted in the old arrival procedure, it is deleted and the MCDU displays the
“MANUAL HOLD DELETED” message in the scratchpad.
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_20-30-10-18 P 39/44
FCOM 19 AUG 10
The crew should check and revise the TMPY F-PLN , as necessary, prior to inserting the TMPY
F-PLN in the active F-PLN.
IF THE CURRENT “TO” WAYPOINT IS NOT COMMON TO THE OLD AND NEW
PROCEDURE
Then, the FMS stacks the current active leg, and the entire new arrival procedure as follows:
‐ The active “TO” waypoint is kept,
‐ A “F-PLN DISCONTINUITY” is inserted,
‐ The entire new procedure is strung after the discontinuity.
The crew should check and revise the TMPY F-PLN, as necessary, prior to inserting the TMPY
F-PLN in the active F-PLN.
Note: Depending on the actual progress of the flight, the flight crew may choose the NO STAR
and/or NO VIA options on the ARRIVAL page, in order to string only the final part of the
approach in the F-PLN.
CHANGING THE DEPARTURE
If the flight crew changes the departure procedure, the FMS replaces the entire departure
procedure by the new selected one.
However, if a lateral modification had been performed within the initially selected departure
procedure, the waypoints following the modified waypoint are considered as “en-route” waypoints
by the FMS. When a new runway or a new departure is selected, these “en-route” waypoints are
kept in the F-PLN, and inserted after the new selected departure.
LATITUDE/LONGITUDE CROSSINGWAYPOINT INSERTION
This function enables the crew to insert one or several points along the flight plan beyond the
revised waypoint, at fixed latitude or longitude intervals (INCR), from a specified latitude or
longitude.
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_20-30-10-18 P 40/44
FCOM 19 AUG 10
These waypoints can be inserted in the F-PLN, and visualized on the corresponding ND. They are
not stored in the pilot-defined elements ; the system deletes them when sequenced.
WRITE the latitude (NXX or XXN, SXX or XXS) or longitude (EXX, XXE, WXX, XXW), the required
increment in degrees between the successive waypoints, and the number of required waypoints.
(Example : If the crew wants to obtain 3 points, at every degree of latitude from N46: Enter
N46/1/3).
PRESS [ 2R ] to insert it into the LL XING/INCR/NO field.
PRESS [ 6R ] to insert the new waypoints in the flight plan without discontinuity.
The system does not store these waypoints in the database.
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_20-30-10-18 P 41/44
FCOM 19 AUG 10
RADIAL FIX INFO
Applicable to:
,
,
MSN,,
4538,,
GENERAL
　
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