Hi "tks1",

I can't guarantee any infos, but Pilatus Flugzeugwerke have always been very kind to modellers and might answer your request favourably. Try contacting them directly: http://www.pilatus-aircraft.com/

The Picture above was taken from the site of a friend of ours that flys often off water. He might also have more infos. His name is Georg Thanner and he owns this website: http://www.gt-thanner.de/modell/porter.htm

Regards,
-Fabrizio