SurferLucas
Southern Gentleman
Very true, but if that happened on an approach, we would be going around. If we suspected it was a GPWS fault, the plane would be grounded once we landed.
I've not had it give a ground prox warning on approach when it's happened (it happens on the RNAV 12 at PSC, and both runways at PUW for some reason). The only place I can recall getting an actual warning was going into SUN with the terrain in sight, trying to keep on the east side of the valley going in.
If they got an actual ground prox warning on this situation, you go to rating detent and try again...then buy the rest of the crew beer later.