Table 3C-15. CDU Annunciations and Scratchpad Messages (Continued)
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alternating (between SP message and entered SP data)
annunciation is non-clearable
activates external CDU alert annunciation
The scratchpad messages are displayed in
uppercase letters. Some of the messages
alternate with the entered data that caused the
simultaneously displayed with data, the first CLR
key activation will clear the scratchpad message
and the next CLR will clear the scratchpad.
Annunciations are displayed in lowercase
letters. The annunciation line displays only a
single annunciation at a time; however, a + marker
will appear to indicate when multiple annunciations
are present. The priority of annunciations is
shown in Table 3C-15. The + flashes whenever
annunciation is generated. Annunciations are
acknowledged by pressing the CLR key and
cycling through the currently active annunciations.
Additionally, the chart indicates if the annunciation is
non-clearable and if the CDU master alert annunciation is
also set by the associated condition. For clearable
annunciations, use the CLR key to clear. If data or
scratchpad messages are in the scratchpad, the CLR key
will first clear the scratchpad before clearing the
3C-16 shows the priority of the CDU
annunciations (highest priority at top of list).
In addition to the annunciations and scratchpad
messages listed in Table 3C-16, the FMS-800 will provide
the additional alerts listed in Table 3C-17 to inform the
flight crew of various flight conditions. These alerts may
appear either on electronic flight instrument displays or on
annunciator light displays.