Originally Posted by Intruder
I am not advocating "doing nothing." However, there are other things an ATC can do RIGHT NOW without ANY change in TCAS logic:
Call a turn.
I agree with you, a well advised turn can probably solve many loss-of-separation situations where TCAS and ATC are involved.
Problem is, that TCAS can directly influence the performance of crews, even upto the point that they argue on following ATC advises.
ACAS Bulletin vol6 describes on page 4 a situation, where ATC instructed a 747 to make a turn to the left for avioding conflicting traffic. The 747 pilot identified the traffic on his traffic display and interpreted, that the turn would point him directly into the traffic's path. So he waited longer than normally necessary which led to a loss-of-separation situation.