Young USAF pilots and aircrew are still flying the old B52 bombers made decades before they were born!
Back in 1970, I took some glider pilot flight lessons up in NH. I wanted some stick-time, because I was learning to fly RC gliders. (No flight simulators in the 70s).
About 25 years later, I went back for joy-ride and we took up the very same glider!
I think it was this model.
https://en.wikipedia.org/wiki/Schweizer_SGS_2-33
Have not seen one since then.. Might be collectors items now..
My point: If you take care of stuff, it can last a long time!!
