Garmin GNC 420AW Pilot's Manual

Also see for GDL 69: Pilot's guide addendum Pilot's guide addendum Activation Instructions Activation Instructions Pilot's guide addendum

Contents

Garmin GNC 420AW Pilot's Manual Manual pdf 56 page image

50Part Four: Section 2HTAWS OperationHTAWS Manual TestGarmin HTAWS provides a manual test capabilitywhich verifies the proper operation of the aural andvisual annunciations of the system prior to a flight.“Test HTAWS” selectionTo manually test the HTAWS system:1. Select the HTAWS Page and press MENU.2. Select the “Test HTAWS?” option.3. Press ENT to confirm the selection.HTAWS Test DisplayAn aural message is played giving the test results:• “HTAWS System Test, OK” if the system passes thetest• “HTAWS System Failure” if the system fails the testNOTE: HTAWS System Testing is disabled when groundspeed exceeds 30 knots so as not to impede HTAWSalerting.HTAWS Legend1. Select the HTAWS Page and pressMENU. Turn the large or smallright knob to highlight “HideLegend?” or “Show Legend?.”2. Press ENT. The legend will be hidden or shownas selected.HTAWS Display with LegendColor DescriptionRed Terrain is more than 250 ft above the aircraft.Orange Terrain is between 0 ft and 250 ft above the aircraft.Yellow Terrain is between 250 ft and 0 ft below the aircraft.Green Terrain is between 250 ft and 500 ft below the aircraft.Black Terrain is more than 500 ft below the aircraft.190-00356-30 Rev H