I didn't realise until the other week how much second hand engines changed hands for.
A second hand 777 engine can fetch $20m
So a LOT more than the scrap value of the airframe. No wonder they’re spirited away as soon as they’re shut down. In fact isn’t it the case that the majority of systems and avionics that can be stripped out and sold onto the world spares market so parts of those aircraft will continue to fly for some years...just no longer in formation