Originally Posted by
Kerosene Kraut
Could be anything between A320, 787, A350 and whatever. There might be a lot new engine technology coming. It's not like progress is ending today.
Well yes, granted the last two perhaps, though I don't see the A320 family getting re-engined for a second time.
But putting new powerplants on 5-10 year old designs hardly qualifies as "grandfathering" when compared to certificating 4 distinct generations of an aircraft over a 50-year period on the same TC.