Very many moons ago - when I was studying for my first A&C at Southall College of Technology (Probably some sort of Uni for London now?) one of my "Classmates" was a Concorde Pilot studying to work on his Tiger Moth!
So he studied Wooden Airframes, Sewing, Doping and Piston Engines, amongst all the other items for Pistons and Aeroplanes 2 - A retirement Hobby I believe.