NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-35
Page
6
Code
02
REVISION 17
FMS CONTROLS AND INDICATORS
CONTROL DISPLAY UNIT (CDU)
The CDU provides information to the flight crew through a 4-inch liquid
crystal display in full color, which is put in action by an alphanumeric
and function keyboard.
1 - ANNUNCIATORS
Six annunciators are scheduled to alert the crew about flight plan
status and sequencing.
MSG (Yellow) - This message appears when a new
message is generated.
WPT (Yellow) - Indication concerning Lateral waypoint alert
when steady. A flashing indication
announces a Vertical waypoint flight plan
angle alert.
SXTK (Amber) - Indication concerning FMS selected
crosstrack mode.
FMS HDG (White) - This label indicates that the FMS is in
heading mode.
FMS APPR (White) - Indication concerning approach mode.
NOTE: GPS INTEG (White) - A fault is detected or RAIM is not
available with the possibility of functioning DME.
2 - LINE SELECT BUTTONS
There are five line select keys on each side of the CDU to position
the cursor. It is used with the alphanumeric buttons to input data
and pressing ENTER completes the entry.
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