Originally Posted by ampan
Chris Iz: The problem there is that you could swap the two premises around and still have had the plane hitting the mountain. For example, assume that the waypoint was where he thought it was, and assume that the radar operator was drunk. In that event, there would have been no accident if he had relied on the AINS, but there would have been if the radar operator's double-vision had him with Erebus dead ahead, the operator therefore recommending an urgent turn to the left.
Certainly ATC have guided aircraft to their demise in the past. I also know of at least one case were instruments on the ground were faulty and probably caused a crash. That said, before proceeding, let me ask
framer or
prospector (or anyone else) if a radio message from a controller looking at a radar scope is what they have in mind when they think of "confirmation from ground based aids."
Thanks