Hi LowNSlow,
I seem to remember reading recently (US APOA magazine?) that some idiot killed himself in a horribly maintained Cub. Somewhere in the US, I think? The damn thing had struts in such a mess that you could shove your finger through in a few places. Many local pilots shaking their heads whenever the thing went near the threshold. Death trap.
Guess what? Wing separation and ker-splat. My sympathies to the family... blah, blah, blah.
The FAA decided to implement an immediate AD, or whatever, that all J3s need to have their struts x-rayed on a regular basis.
Sheer cr*p, of course. A badly maintained anything will lose a wing given enough time.
Have a look on the US AOPA site. I reckon you'll find something about it all there.
The worrying thing is that some other prat may prang a C120, Aeronca or whatever, in similar fashion.