Originally Posted by
Capt Pit Bull
Yes, TCAS has performance inhibitions. But you really need to appreciate that these are NOT comprehensive. I'd classify them as 'inhibiting the totally impossible' rather than 'guarunteeing the possible'. In addition to that, TCAS (probably: type dependant) doesn't know about engine failures / flight control malfunction. It doesn't know if you're covered in Ice.
Just to comment on that item. I think you'll find it to be type specific. Certainly I was earlier today reviewing a certification report for an aircraft with TCAS which did specifically address the airframe icing and WAI ON implications for performance.