FMS GENERAL DESCRIPTION
12 MCDU
Rules:
The trailing entry must be preceded by the slash if it is entered alone.
The leading entry can be followed by a slash, but is not required if it is
entered alone.
SPACE key
The space key (SP) generates a “space” character.
It is mainly used for “free text” type of messages in ACARS
or ATSU applications.
Note: A space character can be entered onto the scratchpad
even if it is empty.
OVFLY key
The OVFLY (fly over) key enables the pilot to change the
transition from a fly-by to a fly-over, and vice versa.
To create a FLY OVER: press the fly over key, then select
the LSK adjacent to the waypoint to be over-flown.
To cancel a FLY OVER: press the fly over key, then select the LSK
adjacent to the waypoint to be flown-by.
CLR key
The clear key (CLR) is used to clear messages or data from
the scratchpad or a data field,
Rules:
− If pressed while the scratchpad is empty, the CLR message is
displayed.
− To erase characters in the scratchpad:
A single short press of the clear key will erase the last character
entered onto the scratchpad.
Pressing the clear key more than 2 seconds will erase the entire
scratchpad.
− To erase data from a data field:
Press while the scratchpad is empty. CLR appears in the scratchpad.
Press the LSK adjacent to erase the data field.
If the cleared data field has a default or FMS-calculated value, the
data field reverts to that value.
In some cases the field cannot be cleared but the value can be
modified by a new entry.
If the cleared data field is a leg in the flight plan, the leg is deleted
from the flight plan and, in most cases, a discontinuity is created.
− Pressing the CLR key will erase CLR from the scratchpad.
J43126AA 00
© THALES AVIONICS S.A.
AIRBUS A318/319/320/321
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