soay:
It brings it home to you how inadequate see and avoid is, when it fails so tragically for two experienced RAF pilots
I presume like everyone else you don't actually know (a) what these aircraft were doing when they collided, (b) whether they knew of each other's presence, (c) whether the pilots were RAF (not all AEF pilots are) and (d) how experienced they were. So I think drawing conclusions about the efficacy of see and avoid may be a tad premature.
NS