
Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-08 Rev. A
12-8
SECTION 12 – ANNUNCIATIONS
& ALERTS
System Annunciation Comment
Display is not receiving altitude input from the air data computer.
Display is not receiving vertical speed input from the air data computer.
Display is not receiving valid heading input from AHRS.
Display is not receiving valid transponder information.
‘LOI’ Indicates Loss of Integrity of GPS information. GPS information is
either not present or is invalid for navigation use. ‘DR’ may also be seen
indicating that GPS is in Dead Reckoning Mode. Note that AHRS utilizes GPS
inputs during normal operation. AHRS operation may be degraded if GPS
signals are not present (see AFMS).
Other Various Red X Indications
A red ‘X’ through any other display field, such as engine instrumentation
fields, indicates that the field is not receiving valid data.
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