TCAS[1] doesn't rely on GPS though, it builds a picture of the airspace around it through triangulation and radar-style ranging - I believe it only relies on al

TCAS[1] doesn't rely on GPS though, it builds a picture of the airspace around it through triangulation and radar-style ranging - I believe it only relies on altitude to be reported by the other aircraft, which is generally very accurate. I suppose anything is possible, but I've never heard of it actually getting plane positions wrong due to sensor malfunctions. Far more likely is pilots not following, or improperly following, its warnings. It's not capable of assuming control over the plane, as far as I know... [1] https://en.wikipedia.org/wiki/Traffic_collision_avoidance_system https://en.wikipedia.org/wiki/Traffic_collision_avoidance_sy...