Gotta be cheaper than buying new planes which would also have new engines. Generally there needs to be a pretty substantial increase in capability before it’s worth retiring an existing platform, especially in a logistics role where you don’t get as much benefit from the bleeding edge because nobody’s supposed to be shooting at you in the first place.
Well they upgraded all the engines at some point. I don’t know the cost breakdown between engines vs frame but I don’t think it’s good.
Gotta be cheaper than buying new planes which would also have new engines. Generally there needs to be a pretty substantial increase in capability before it’s worth retiring an existing platform, especially in a logistics role where you don’t get as much benefit from the bleeding edge because nobody’s supposed to be shooting at you in the first place.