When I looked at my GPS, the terrain alert
was flashing bright red almost over the entire screen.
Remember that you could be at a perfectly safe MVA and still see a bunch of yellow on your MFD TAWS screen, or even get a terrain alert
if your system sees you descending quickly towards terrain.
While flying an ILS approach on a heads-up display, the captain received a terrain alert
and discovered the ILS frequency had somehow been changed and the aircraft was in a constant descent with zero in the altitude alert window.
I have occasionally seen pilots get so distracted by the avionics they abandon flying the airplane until ATC, the CFI or a terrain alert
This includes the GAD43 autopilot gyro emulator, SVT synthetic vision software, out-of-the-box compatibility with Garmin weather radar systems, plus built-in, certified TAWS-B terrain alert
functionality, which is only available in the G600.
Additionally, I experienced a disconcerting terrain alert
while at a correct altitude on a non-precision GPS approach in mountainous Vermont.
As you tilt the iPad to a comfortable reading position, the unit hollers, "Attitude!" The terrain alert
feature is set up to warn if the airplane is in a pitch attitude that will cause it to hit the ground within 60 seconds.
They won't change colors until a terrain alert
turns the conflicting feature red and an obstacle label appears on screen.