Abnormal Operations; Abnormal Gps Conditions - Garmin G900X Pilot's Manual

2.5 ABNORMAL OPERATIONS

ABNORMAL GPS CONDITIONS

The annunciations listed in Table 2-3 can appear on the HSI when abnormal GPS conditions occur; see Figure
2-44 for examples. Refer to the GPS Navigation Section for more information on Dead Reckoning Mode.
Annunciation
LOI
WARN
INTEG OK
DR
Dead Reckoning Mode causes the CDI to be removed from the display (when GPS is the selected navigation
source) and the following items on the PFD to be shown in yellow:
• Current Track Bug
• Wind Data (calculated based on GPS information)
• Distances in the Bearing Information windows
• GPS bearing pointers
These items should be verified when operating in Dead Reckoning Mode.
190-00726-00 Rev. A
Location
Lower left of Loss of Integrity Monitoring–GPS integrity is insufficient for the current
aircraft symbol phase of flight
Lower left of
Warning–RAIM function detects excessive GPS position errors
aircraft symbol
Lower left of Integrity OK–GPS integrity has been restored to within normal limits
aircraft symbol (annunciation displayed for 5 seconds)
Upper right of Dead Reckoning–System is using projected position rather than GPS position
aircraft symbol to compute navigation data and sequence active flight plan waypoints
Table 2-3 Abnormal GPS Conditions Annunciated on HSI
Figure 2-44 Example HSI Annunciations
Garmin G900X Pilot's Guide
FLIGHT INSTRUMENTS
Description
2-31