User:Vanguard10/sandbox318

Initially, the A318 was to be powered by only the PW6000 engine. However, Air France successfully sought that Airbus offer a second sourced engine, the CFM56-8, which was a variant of an engine used on many A320 family aircraft.

https://www.bloomberg.com/news/articles/2013-03-11/airbus-double-shrink-a318-stumped-for-buyers-after-10-year-run

PW6000 troubles

Eventually, more A318 aircraft were produced with CFM engines.