Heights for terrain display
Green
Amber
Red
Green 2000 to 500 (250 lg/d) below
Amber 500 ( 250 lg/d) below to 2000 above
Red >2000 above
For terrain caution
Caution terrain, terrain, too low terrain, glide slope, too low gear, too low flaps, sink rate, don’t sink, bank angle
Correct the flight path or the airplane configuration
Aural alerts
Pull up, terrain ahead pull up, obstacle ahead pull up
Gpws escape maneuver
If positive visual verification, no obstacle or terrain hazard in VMC. CAUTIONARY
CAUTION TERRAIN
TERRAIN, TERRAIN, PULL UP
Time from projected impact
CAUTION TERRAIN. 40-60 sec
TERRAIN, TERRAIN, PULL UP. 20-30 sec
Time from projected impact