Most definitely a potential 'killer', one of the major problems being the loss of airspeed going from a headwind to a tail and the tendency to stall in the turn therefore.
I always thought it was an optical illusion at low levels affecting the pilot's judgement and causing them to fly unbalanced, draggy turns - that's what I was taught and it's what I teach ("check yer ball, check yer speed, and do something about it - now!").
I've not got any instrument rating so haven't been able to experiment... does this loss-of-airspeed effect manifest itself above cloud and out of sight of the surface? I look forward to reading responses from people who've tried it.
MB
