2-56 Pilot’s Guide 190-02488-01 Rev. B
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Status Indications
Alert Types
The unit generates annunciations in response to various conditions that may occur.
These abbreviated messages are grouped according to the level of urgency and
required response. They display in order of priority, from highest to lowest.
1. Warnings
2. Cautions
3. Mode & function advisories
WARNINGS & CAUTIONS
Warnings require immediate attention. Cautions indicate the presence of an
abnormal condition that may require pilot action. A warning may follow a caution if
no attempt is made to correct the condition (e.g., altering the aircraft’s path toward
the alerted terrain or obstacle).
MODE & FUNCTION ADVISORIES
Advisories provide status and operating information.
System advisories. These display on a dedicated message list. Depending on the
number of advisories, this list may be scrollable.
Function or mode specific advisories. These appear as unobstructed
annunciations in the annunciator bar.
1 System Messages List 3 Mode Advisory Annunciation
2 Message Key
For a complete list of all system-related advisories, refer to System Hardware
Advisories.
2
1
3
Advisory Messages & Annunciations
Advisory list for GPS 175 shown as typical.
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