My Tiger 120 had the top wing covering come off in flight on the right wing. Fortunately, it was the top covering not the bottom. It was trailing back like a banner when it came off. I landed immediately (yep, it still flew.. as I said, top covering). I then removed all the covering from the wing and used Ultracoat to replace it. I think I will do the same thing (replace the covering) to the other wing now that I think about it.

CGr.