Annunciations And Alerting Functions; Altitude Alerting; Minimum Altitude Alerting - Garmin GI 275 Pilot's Manual

2.2 ANNUNCIATIONS AND ALERTING FUNCTIONS

ALTITUDE ALERTING

The Altitude Alerting function provides the pilot with visual and aural alerts when
approaching or deviating from the Selected Altitude. Whenever the Selected Altitude is
changed, the Altitude Alerter is reset. The following will occur when approaching the Selected
Altitude:
NOTE: Depending on configuration at time of installation, an aural tone is generated
when passing within either 1000 feet or 200 feet of the selected altitude.
• Passing within 1000 feet of the Selected Altitude, the Selected Altitude (shown above the
Altimeter) flashes for 5 seconds and becomes a white box with black numerals.
• When the aircraft passes within 200 ft of the Selected Altitude, the Selected Altitude flashes
for 5 seconds to indicate that the aircraft is approaching the selected altitude.
• After reaching the Selected Altitude, if the pilot flies outside the deviation band (±200 Feet
of the Selected Altitude), the Selected Altitude changes to amber text on a black background,
flashes for 5 seconds, the altitude bug changes to amber, and an aural tone is generated.
Within 1000 ft

MINIMUM ALTITUDE ALERTING

WARNING: Do not rely on the displayed minimum safe altitude (MSAs) as the
sole source of obstacle and terrain avoidance information. Always refer to current
aeronautical charts for appropriate minimum clearance altitudes.
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 amber and the MFI
generates a "Minimums Minimums" aural alert.
190-02246-01 Rev. A
Within 200 ft
Altitude Alerting Visual Annunciations
Garmin GI 275 Pilot's Guide
Flight Instruments
Deviation beyond 200 ft
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