ORIGINAL: Charlie P.
Can't say what happened to the covering?? I've seen panels spontaneuosly explode with a "BANG" during winter flys when the temp is near zero F but that's usually a single tear. It shouldn't happen to a sane pilot.
I was looking it over some more today and I just can't figure out what could have caused it. It looks like it was cut with a knife, the edges are not even jagged. I'm wondering if it might have been a defect in the covering, maybe it was slightly cut in that location from the factory.
I guess I should get busy recovering the wing. I can't wait to see what goes wrong the next time I fly it.