Garmin G1000H Bell 407GX Pilot's Guide - Page 347

HAZARD AVOIDANCE pressure, temperature, and lapse rates have fixed values), it is common for the baro-corrected altitude (as read from the altimeter) to differ from the GSL altitude. This variation results in the aircraft's GSL altitude differing from the baro-corrected altitude. DISPLAYING HTAWS DATA HTAWS uses yellow (caution) and red (warning) to depict terrain and obstacle alerts relative to aircraft altitude. Colors are adjusted automatically as the aircraft altitude changes. The colors and symbols in Figure 6-74 and Tables 6-7 and 6-8 are used to represent terrain, obstacles, and potential impact points. Figure 6-74 Terrain Altitude/Color Correlation for HTAWS Unlighted Obstacle Lighted Obstacle < 1000' AGL > 1000' AGL < 1000' AGL > 1000' AGL Obstacle Location Red obstacle is at or above current aircraft altitude Yellow obstacle is between 0' and 250' below current aircraft altitude Gray obstacle is 250' or more below current aircraft altitude Table 6-7 HTAWS Obstacle Colors and Symbology Potential Impact Point Symbol Alert Type Warning Example Annunciation Caution Table 6-8 HTAWS Potential Impact Point Symbols with Alert Types 190-01255-00 Rev. A Garmin G1000H™ Pilot's Guide for the Bell 407GX 335