On Sunday, October 6, 2013 4:05:57 PM UTC-6, Don Johnstone wrote:

All John says is absolutely correct. The sad fact is that this type of

accident occurs on a fairly regular basis and as yet no one has come up

with a plausible cause. What is clear that the wing drop is a symptom and

requires that the glider is released very early which is why the hand

should be on the release. A similar accident happened at my club a month

back involving a Discus, in that case the pilot was unhurt but the glider

was written off.

What is clear is that once the glider starts to yaw nothing on this earth

is going to stop it except contact with the ground so early release, to

mitigate the inevitable accident, is essential.



The sad fact is the UK hasn't figured out the cause - everyone else has.