Garmin HTAWS User Guide - Page 62

Part Four: Section 3 HTAWS Alerts HTAWS Not Available Alert Garmin HTAWS requires a 3-D GPS navigation solution along with specific vertical accuracy minimums. Should the navigation solution become degraded, or if the aircraft is out of the database coverage area, the annunciation "TAWS N/A" is generated in the annunciation window. When the GPS signal is re-established and the aircraft is within the database coverage area, the "TAWS N/A" annunciation is removed. No GPS Position HTAWS Failure Alert HTAWS continually monitors several system-critical items, such as database validity, hardware status, and GPS status. If the terrain/obstacle database is not available, the aural message "HTAWS System Failure" is issued along with the "TAWS FAIL" annunciation. "TAWS NOT AVAILABLE" Display Position Outside Terrain Database Coverage HTAWS FAILED Display HTAWS Alert Summary The aural alert voice gender is configurable to be either male or female. See your Garmin installer for further information on configuring the alert system. 56 190-00356-30 Rev H