Keep your hand off the release handle during aero tows!

At 15:18 14 October 2013, Paul Ruskin wrote:
On Monday, October 14, 2013 2:43:37 PM UTC+1, Bill D
wrote:

Yes, I read your ramble. The operable statistic is number of
accidents
per number of launches - very simple and not included in your
post.


OK. I note that you've avoided my question, which was
whether we you agree
with "The data says that in the period 2006-12 a German pilot
had much the
same chance as a UK civilian pilot of being killed or injured in
a winch
accident. "

So, I'll ask again - do you agree with that conclusion? I've
provided all
the data you need, and its source, and the calculation is
simple.

Whether you think that's a good "operable statistic" or not is
different.
I happen to think it is - because then we don't confuse
different reporting
of incidents.

Paul


There can be no doubt when an injury or a fatality occurs and
such an event should always be reported and recorded in
gliding developed countries. I think we can all agree that no
country will over-report death and injury data. Therefore the
only way that comparison of death and injury rates between two
countries could *not* be based on valid operable statistics is if
you were to believe that one country is under-reporting them -
which would be an interesting propositon to put to the Germans.

John Galloway

John, Paul’s figures are for fatals and “serious� injuries, not all
injuries, AIUI. I would not be surprised if the definition of “serious�

differs.

Chris N

Definitions are important for statistical analysis. If a glider crashes
after flying a circuit from an 800ft cable break, is it a winching
accident or an approach and landing accident? If it spins after
successfully completing a winch launch, is that a winching accident
or a stall/spin accident? I would think that a serious injury would be
broken bones, head injury, deep lacerations and anything that
requires hospital treatment. So a bruised backside or a grazed
finger shouldn't really count.

Derek Copeland

At 16:22 14 October 2013, Chris Nicholas wrote:
John, Paul’s figures are for fatals and “serious� injuries, not all

injuries, AIUI. I would not be surprised if the definition of
“serious��

differs.

Chris N