Abnormal Operations; Abnormal Gps Conditions - Garmin GI 275 Pilot's Manual

Flight Instruments
For altitude awareness, a barometric or radar minimum altitude bug (e.g., approach
minimums, ESA, MOCA, etc.) may be set by the crew and is reset when power is cycled. The
bug appears on the altitude tape at the set altitude and is "parked" at the corresponding end
of the tape when the bug is beyond the visible range of the tape. When the crew-defined
altitude is more than 100 feet away, the bug is cyan. Within 100 feet, the bug is white. Once
the aircraft reaches the crew-defined minimum altitude, the bug turns yellow and the MFI
generates a "Minimums Minimums" aural alert.
Beyond 100 ft
Setting the minimum altitude alert:
1) From the 'ADI' Page, open the menu and select ADI Options > Minimums.
2) Enable the Altitude Minimum Bug Button.
3) Set the altitude source using the Alt Min Source Datafield (barometric or radio altitude).
4) Set the minimum altitude using Alt Min Value Datafield.

2.3 ABNORMAL OPERATIONS

NOTE: Interference from GPS repeaters operating inside nearby hangars can cause an
intermittent loss of attitude and heading displays while the aircraft is on the ground.
Moving the aircraft more than 100 yards away from the source of the interference
should alleviate the condition.

ABNORMAL GPS CONDITIONS

If an external GPS navigator fails, the MFI will use the other external GPS navigator (if
equipped) as a position source. Should all external GPS sources fail, the MFI will use its
internal VFR-only GPS, when configured. When using the VFR GPS, a "VFR GPS is being
used" System Message is generated. Should all GPS sources, including the internal VFR GPS
fail, "No GPS POS" is annunciated. See the Navigation Section for details.
56
Within 100 ft
Minimum Altitude Visual Annunciations
Garmin GI 275 Pilot's Guide
Altitude Reached
190-02246-01 Rev. L
Minimum
Altitude Bug