Originally Posted by
putt for dough
One has got to wonder how two TCAS equiped aircraft
can have a mid-air?
A buried comment in the story on msnbc says "Nevertheless, radars showed the Legacy and the Boeing were flying with an altitude difference of about 1,000 feet."
Is the altitude reference for TCAS and the transponder from which traffic radar display altitude the same?
If TCAS is told a false altitude it obviously won't do the right thing.
Is there a plausible single technical fault or setting error in either of the two aircraft which could give this outcome?