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FLIGHT INSTRUMENTS
ALTITUDE ALERTING
Altitude Alerting provides the pilot with a visual alert when approaching the Selected Altitude. Whenever the
Selected Altitude is changed, the Altitude Alerter is reset. The Altitude Alerter is independent of the GFC 700
AFCS, but alerting tones are heard only when the GFC 700 is installed. The following occur when approaching
the Selected Altitude:
• Upon passing through 1000 feet of the Selected Altitude an aural tone is heard. The Selected Altitude changes
to black text on a light blue background and flashes for 5 seconds.
• 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 pilot flies outside the deviation band (±200 feet of the Selected
Altitude) an aural tone is heard. The Selected Altitude changes to yellow text on a black background and
flashes for 5 seconds.
LOW ALTITUDE ANNUNCIATION
A Low Altitude Annunciation is available only when WAAS is available. This annunciation is not
NOTE:
shown for systems equipped with TAWS, unless TAWS is inhibited.
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, flashing
for several seconds, then remaining displayed until the condition is resolved.
72
Within 1000 ft
Within 200 ft
Figure 2-38 Altitude Alerting Visual Annunciations
Figure 2-39 Low Altitude on GPS WAAS Approach
Garmin G1000 Pilot's Guide for the Diamond DA40/40F
Deviation of ±200 ft
Altimeter
190-00592-06 Rev. A
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