James,
Thank you for reminding me of the designation of that plane. However, I don't agree that it has little to offer over modern aircraft. I have flown modern small planes and for the most part they are rather boring. I did not get to fly or even ride in the PT-22, but I did ride in a 1927 Travel Air biplane. The controls were removed from the front cockpit so I did not get to fly it, but just riding in it was more exhilarating than anything I did fly. Of course I like antique aircraft about as well as steam locomotives.