On 3/22/2011 8:20 AM, Nyal Williams wrote:


worthyAt 01:29 22 March 2011, Eric Greenwell wrote:
On 3/21/2011 6:00 PM, bildan wrote:


An airworthy spar in a glider flown by a well trained pilot who knows
and follows the rules has a 0% chance of breaking.

Wasn't that the point of the website? That the paraglider has a
relatively large, non-zero chance of "breaking", even though you are
well trained and follow the rules? I don't know if he's right, but
seemed to be reasonable argument, that many/most accidents began when
the paraglider became unairworthy. That seems different from our
sailplane experience, where I'd say most glider crashes involve an
airworthy glider.

Have you factored out the unairworthy gliders made so by faulty assembly?

Yes, I was thinking of gliders that were airworthy at the beginning of
the flight. I would also exclude all paragliders that were not airworthy
at the beginning of the flight.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)