@ATC Watcher
Depicting the situation today, you said:
But incident statistics so far both from USA and Eurocontrol show that some controllers still issue clearances contrary to RAs and that pilots still choose to follow ATC instead of RA.
I think that one can argue about the controller in the Ueberlingen accident, if he really has issued a clearance contrary to the TCAS RA.
He had to maintain separation of the aircraft, which (if I have read the report correctly) normally meant 5NM and - due to inactive STCA - at the night of the accident had been set to 7NM.
The TCAS RA came before the aircraft underrun separation (at 7.11NM) and the controller had just finished wording his clearance when the aircraft under-run separation.
Do you (or anyone else in this threat) know, if there is work going on to give the controller feedback on the RAs issued by TCAS?