Altitude Alerting; Low Altitude Annunciation - Garmin G1000H Pilot's Manual

FLIGHT INSTRUMENTS

ALTITUDE ALERTING

The Altitude Alerting function provides visual and audio alerts when approaching the Selected Altitude.
Whenever the Selected Altitude is changed, Altitude Alerting is reset. Altitude Alerting is based on the altitude
information shown on PFD 1. Altitude Alerting is independent of the AFCS.
The following occur when approaching the Selected Altitude:
• Upon passing through 1000 feet of the Selected Altitude, the Selected Altitude Box changes to black text on
a light blue background, flashes for 5 seconds, and an aural tone is generated.
• When the aircraft passes within 200 feet of the Selected Altitude, the Selected Altitude changes to light blue
text on a black background and flashes for 5 seconds.
• After reaching the Selected Altitude, if the aircraft flies outside the deviation band (±200 feet of the Selected
Altitude), the Selected Altitude Box changes to yellow text on a black background, flashes for 5 seconds, and
an aural tone is generated.

LOW ALTITUDE ANNUNCIATION

The Low Altitude Annunciation is available only when SBAS is available. This annunciation is not
NOTE:
shown for unless HTAWS alerting is inhibited.
When the Final Approach Fix (FAF) is the active waypoint in a GPS SBAS 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 left of the Altimeter, flashing
for several seconds then remaining displayed until the condition is resolved.
74
Within 1000 feet Within 200 feet
Figure 2-42 Altitude Alerting Visual Annunciations
Figure 2-43 Low Altitude on GPS SBAS Approach
Garmin G1000H Pilot's Guide for the Bell 407GX
™
Deviation of ±200 feet
Altimeter
190-01255-00 Rev A