Pilot's Guide

190-00663-03 Rev. A
Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi
85
FLIGHT INSTRUMENTS
ALTITUDE ALERTING
The Altitude Alerting function provides the pilot with visual and audio alerts when approaching the Selected
Altitude. Whenever the Selected Altitude is changed, the Altitude Alerter is reset. The Altitude Alerter is
independent of the Garmin AFCS, but alerting tones are generated only when the Garmin AFCS is installed.
The following occur when approaching the Selected Altitude:
• Upon passing through 1000 feet of the Selected Altitude, the Selected Altitude (shown above the Altimeter)
changes to black text on a cyan background, flashes for five seconds, and an audio tone is generated.
• When the aircraft passes within 200 ft of the Selected Altitude, the Selected Altitude changes to cyan text on
a black background and flashes for five seconds.
• After reaching the Selected Altitude, if the pilot flies outside the deviation band (±200 feet of the Selected
Altitude), the Selected Altitude changes to yellow text on a black background, flashes for five seconds, and an
audio tone is generated.
Figure 2-47 Altitude Alerting Visual Annunciations
Within 1000 ft Within 200 ft Deviation of ±200 ft
LOW ALTITUDE ANNUNCIATION
NOTE: The Low Altitude Annunciation is available only when an SBAS signal (such as WAAS, EGNOS, or
MSAS) is available and the pilot has inhibited TAWS alerts, or the TAWS system is unavailable or has failed.
When the Final Approach Fix (FAF) is the active waypoint in a GPS WAAS approach using vertical guidance,
a Low Altitude Annunciation may appear if the current aircraft altitude is at least 164 feet below the prescribed
altitude at the FAF. A black-on-yellow ‘LOW ALT’ annunciation appears to the top right of the Altimeter, flashes
for several seconds, and remains displayed until the condition is resolved.
Figure 2-48 Low Altitude on GPS SBAS Approach
Altimeter
LOW ALT
Annunciation