Garmin G1000H Bell 407GX Pilot's Guide - Page 86
Altitude Alerting, Low Altitude Annunciation, Altitude Alerting Visual Annunciations
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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. Within 1000 feet Within 200 feet Deviation of ±200 feet Figure 2-42 Altitude Alerting Visual Annunciations LOW ALTITUDE ANNUNCIATION NOTE: The Low Altitude Annunciation is available only when SBAS is available. This annunciation is not 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. Altimeter Figure 2-43 Low Altitude on GPS SBAS Approach 74 Garmin G1000H™ Pilot's Guide for the Bell 407GX 190-01255-00 Rev A