Bob Korves wrote:
I find the concept of "near-midairs" close to useless. One pilot's "near
miss" is another pilot's "sighting". If there was some way of accurately
and consistently measuring the distances and then quantifying large numbers
of results objectively then it _might_ be useful. Until then there are only
"hits" and "misses" in my book. "Hits" make the evening news, subjective
war stories shouldn't...
-Bob

It could be done by radar for aircraft with transponders (which would
include some gliders and most GA aircraft, at least in the the US) or by
flight recorders (glider/glider near misses could often be measured this
way), but I don't know if any effort is made to get these numbers. The
exception would be if both aircraft were under ATC control.

--
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Eric Greenwell
Washington State
USA