On 3 July, 15:45, Don Johnstone wrote:

We do know that the Putchaz is a very dangerous glider, and has been
involved in more than it's fair share of accidents.

That is a correlation, not a causation. Most Puchacz spin accidents
occur with instructors on board: perhaps the problem lies with
instructor training?

You are getting into the debate about whether deliberate spin training
kills more people than accidental spins.

There is no debate, more people are killed in deliberately induced spins
than in accidental ones...

That's meaningless unless we know how many deliberate and accidental
spins there are, what proportion result in deaths, and how many
deliberate spins those who die in accidental ones have done.

And I'm still not sure I believe it. How many of the spins of a broken
cable or at the final turn are deliberate.

Less risk and the potential of greater benefit, it would also
reduce the need for clubs to own the potentially lethal Putchaz as the
recognition and prevention could be done in any two seater.

As long as there are spinnable single seaters out there, that's just
asking for trouble.

Ian