Aside from the one anecdotal account in this thread, I don't recall that I
ever heard of a double failure, though doubtless it's happened somewhere
at some time.

So far as I know practicing landing on tow was never a requirement in any
European country, though I believe it was in Australia at one time.

We tried it a few times at Booker years back. As mentioned elsewhere, the
glider goes into low-tow and lands before the tow-plane. Not that
difficult but certainly not that safe and easy. I would expect a fair
number of accidents to result if it was introduced as part of normal
training and given that I'm not aware of any as a result of double
failures clearly not worth the risk.

At 01:05 08 September 2009, ZZ wrote:
It is likely that the probability of an ACTUAL double release failure on

tow is what ever positive number is closest to zero. Of course that
doesn't mean that Mr.Murphy can't serve one of these up.

I would be interested in hearing any accounts of actual, non-instructor
induced double release failures which required either a landing on tow
or purposely breaking he rope to end the problem.

I would also be interested in any opinions regarding practicing landing
on tow to prepare oneself for this unlikely event. (I know that this is
or was a required maneuver in some European countries...but is it worth
the risk?)

Paul
ZZ