[winstonp]

AFAIK the 757 frame is too heavy to be powered by the LEAP engines. Those planes were powered by a class of engine between the old 737 and 777 engines, and nobody makes them anymore because they're not in demand, so a 757 MAX is just not financially viable.

[rawgabbit]

The article said Boeing is talking to Rolls Royce for the new plane. American Airlines used to have a fleet of 757s powered by Rolls Royce engines assembled in Montreal Canada. I used to work on those engines many many years ago.

[selectodude]

You can use the most powerful LEAP engine on a lightened 757 “neo”, it’ll just be a complete dog like the A321 and not a rocket ship like the old one.

[KerrAvon]

Just ‘cause I’m totally ignorant about this stuff: why is that?