Guys

This is not a question about weak links or the capability in practice. We have been towing gliders 600 kg with Super Cub 150/180 for more than 30 years. The problem is that someone recently found a supplement to the Flight Manual stating that the Super Cub is limited to tow gliders 600 kg and now wants us to put a 600 kg limit on all Cubs. (Yes I know..........)

It seems that Piper never delivered a Cub with a tow hook so all installations are done on a National level with National approvals. Do you know of any such approval that you can direct me to? Especially in Europe.

Thanks
Robert