Garmin Apollo GX 50 User Manual page 183

Set Barometer (GX50/60 Only)
When an approach is enabled, you are prompted to
enter the local altimeter setting.
Enter
Local Altimeter
Setting 29.92in
No Valid Altitude Input for Approach (GX50/60
Only)
An approach is not valid unless an altitude value is
available.
Abort Approach
No Valid
Altitude Input
Approach RAIM Unavailable (GX50/60 Only)
An approach is not valid unless RAIM is available.
Abort Approach
GPS RAIM
Not Available
RAIM Predict Too Late (GX50/60 Only)
When the RAIM prediction occurs too close to the
FAF, the following message appears.
Abort Approach
RAIM predict not
completed by FAF
Lat/Lon Position Jump (GX50/60 Only)
Lat/Lon
Position Jump
Outputs Flagged
Message Function
8-7