2 ms·
Also it seems the airline chooses the engine type they want on their planes, not Boeing. It's a purchase option.
by SkyMarshal 7y ago
Also it seems the airline chooses the engine type they want on their planes, not Boeing. It's a purchase option.
- cmurf 7y agoIt might be the purchase time option commits the airworthiness type certificate to a particular engine make/model (or range of them). Typically the airplane lease is separate from the engine lease, which helps the airline deal with the totally separate maintenance requirements between airframe and powerplant.