Originally Posted by
Buster15
Really. Why is that?
If you look at the reliability of the Trent XWB thus far you will see it is exceptional.
Pratt &Whitney has and still is having major problems with their GTF and GE decided not to offer an engine for the A350 so I don't think RR has much to worry about.
The problem customers have with RR is not that developing a new engine is difficult and imperfect engineering, but that RR's handling of the entire issue has been opaque and haphazard. They know it's hard to make new engines. They don't have confidence RR will work on it in an effective and straightforward fashion. RR can get away with a Jedi-hand-wave dismissal of trouble when the engines are delivered on time and work, but not when they don't.
RR's customer confidence issues are bigger than its engineering issues.