G1000 Reference Guide - SkyHoppers

SECTION 10 – HAZARDAVOIDANCEExcessive Descent Rate Alert (EDR)The purpose of the Excessive Descent Rate alert is toprovide suitable alerts when the aircraft is determinedto be closing (descending) upon terrain at an excessivespeed. Figure 10-22 displays the correlation betweenheight above terrain and descent rate, resulting in the twoEDR alerts. EDR alerts have two levels of severity, caution(sink rate) and warning (pull-up).Height Above Terrain (Feet)600055005000450040003500300025002000150010005000"SINK RATE""PULL UP"2000 4000 6000 8000 10000 12000Descent RateFigure 10-22 Excessive Descent RateNegative Climb Rate After TakeoffAlert (NCR)The purpose of the Negative Climb Rate After Takeoffalert is to provide suitable alerts to the pilot when thesystem determines that the aircraft is losing altitude(closing upon terrain) after takeoff. The aural message“Don’t Sink” is given for NCR alerts, accompanied by anannunciation and a pop-up terrain alert on the display.Figure 10-23 illustrates the envelope for alerts. Figure 10-23 Negative Climb Rate“Five-Hundred” Aural AlertThe purpose of the aural alert message “Five-hundred”is to provide an advisory alert to the air crew that theaircraft is five-hundred feet above terrain. When theaircraft descends within 500 feet of terrain, the auralmessage “Five-hundred” is heard. There are no displayannunciations or pop-up alerts that accompany the auralmessage.Displaying Terrain and Obstacles on theNavigation Map1) With the Navigation Map displayed, press theMAP Softkey.2) Press the TERRAIN Softkey. Terrain and obstacleproximity will now be displayed on the map.10-14Garmin G1000 Cockpit Reference Guide for the Cessna Nav III190-00384-07 Rev. A