Garmin G1000H Bell 407GX Pilot's Guide - Page 355

HAZARD AVOIDANCE SYSTEM STATUS During system power-up, HTAWS conducts a system-test of its aural and visual annunciations. The system test can also be manually initiated. An aural alert is issued at test completion. HTAWS System Testing is disabled when ground speed exceeds 30 knots. No terrain, obstacle, or VCO alerting is available while a system test is in progress. Alert Type PFD/HTAWS Page Status Annunciation System Test in Progress System Test Pass None HTAWS System Failure HTAWS Not Available HTAWS Availability Restored None HTAWS FLTA Alerting Inhibited Reduced Protection Mode Enabled HTAWS Page Center Banner Annunciation HTAWS TEST None HTAWS FAIL None None None None Aural Message None "HTAWS Test OK" "HTAWS Failure" "HTAWS Not Available" "HTAWS Available"* None None * Aural message not issued if HTAWS is inhibited. Table 6-10 HTAWS System Status Annunciations Manually testing the HTAWS System: 1) Select the HTAWS Page. 2) Press the MENU Key (Figure 6-83). 3) Select 'Test HTAWS System' and press the ENT Key to confirm the selection. Figure 6-83 HTAWS Page Menu 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 Failure" is generated along with the 'HTAWS FAIL' alert annunciation. 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 190-01255-00 Rev. A Garmin G1000H™ Pilot's Guide for the Bell 407GX 343