The whole business of airliners engines is fascinating in its own.

AIUI when you're buying a plane from Airbus, it's possible/frequent to own the _airframe_; but not the engines — the engines are often _leased_ (sometimes directly from RR/GE); I've even heard of cases where each engine will be owned by a different entity!

https://aviation.stackexchange.com/questions/12528/jet-engin...