Originally Posted by
ATC Watcher
What is likely to make a media deal is the wrongly calibrated ( or QNH setting) of the PAT altimeters which might open discussion on the real issue : the initial 100 feet procedural separation
My impression was not that they were wrongly calibrated, but that they were simply
bad. It sounds like the barometric altimeters in the helicopter type in question might not be taking the helicopter's own backwash/downwash into account.