That's ~34 years of flight. Under day/VFR conditions, it would take well
over a century to accumulate if you flew every day. That many years of
exposing a composite structure to sunlight and ozone would worry me a bit,
OSTIV not withstanding. Add turbulence and hard knocks (not to mention
parts availability) and I suspect the lifespan would be significantly less
than 300K hours.

I guess we'll just have to wait and see how it all turns out.

Ray Warshaw (tongue firmly in cheek)
1LK

wrote in message
oups.com...
300 000 hours ( yes 3 hundred k ) is a 'realistic' lifespan for a
plastic glider. Read the recent OSTIV proceedings if you dont believe
me.

Ian