FMS GENERAL DESCRIPTION
MCDU 11
When the airport key is pressed and a destination airport is to be
displayed, the F-PLN page containing the destination is displayed with
the destination in field 4L, except when the destination is the TO
waypoint (respectively NEXT waypoint), then the press of the airport
key changes the location of the destination to field 2L (respectively 3L).
This page can then be slewed such that all the waypoints move up or
down including the destination. This logic also applies to the alternate
destination and the origin, except that the origin is always displayed in
field 1L. Access to the lateral and vertical revision pages and use of the
horizontal slew keys remain available.
Note that the AIRPORT key can be considered as a slew key. For
instance, if the AIRPORT key has been pressed once such that the
destination is in 4L-4R, this is the waypoint orientation that is
memorized should a LAT REV or VERT REV occurs. Any subsequent
reversion from the LAT REV or VERT REV should return to this
orientation, when appropriate.
If a TMPY F-PLN does not exist and a secondary page (e.g. SEC INDEX,
SEC F-PLN) is not displayed, pressing the AIRPORT key works on the
active flight plan, as described.
If a TMPY F-PLN exists and a secondary page is not displayed, pressing
the AIRPORT key works on the temporary flight plan, as described.
If a secondary page is displayed, pressing the AIRPORT key works on
the secondary flight plan.
For the active, secondary and temporary flight plan, the alternate
origin is not included in the orientation sequence of successive
AIRPORT key pushes.
ALPHANUMERIC keys
The alphanumeric keys enable the pilot to type letters and numbers
on the scratchpad successively from left to right.
The +/- key enables the pilot to enter negative figures (for example,
outside air temperature).
– is selected when pressing once, + is selected when pressing twice.
The slash key ( / ) is used to separate data when multiple entries are
written onto the scratchpad.
For example, airspeed and Mach (280/.78), wind direction / velocity /
altitude (150/50/200).
AIRBUS A318/319/320/321
© THALES AVIONICS S.A.
J43126AA 00
Summary of Contents for FMGS
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