NEFlyer From , joined Dec 1969, posts, RR: Posted (15 years 10 months 4 days 2 hours ago) and read 4306 times:
I was looking over info on AA's 777 and they state that their 777's are powered by GE engines.. when I was in SEL, I saw a bunch of Cathay Pacific 777's with Rolls Royce stickers on their engines.. Im guessing those are Rolls Royce trents.. how do these 2 engines compare?
AA737-823 From United States of America, joined Mar 2000, 6281 posts, RR: 10
Reply 2, posted (15 years 10 months 4 days 1 hour ago) and read 4275 times:
I have no idea. BUT- I do know that AA uses Rolls Royce engines on their 777's as well, and raised a big stink when Boeing said that they would only offer GE on the new 772LR version. The two engines must be comparable in performance. However, GENERALLY (not always) Rolls are considered more reliable than either Pratt and Whitney or GE. However, all three manufacturers make good engines.
FLY DC JETS From United States of America, joined Feb 2000, 199 posts, RR: 0
Reply 3, posted (15 years 10 months 4 days 1 hour ago) and read 4267 times:
"However, GENERALLY (not always) Rolls are
considered more reliable than either Pratt and Whitney or GE. However,
all three manufacturers make good engines. "
Not true at all. For years Rolls-Royce engines were the least reliable engines. In fact the first engine they ever made that was really superior in reliablity to another was the RB211-535. And the only reason the -535 was really superior is because PW took their time fixing some major teething problems that PW2000 had.
The 94 inch engines (CF6, PW4000) have an inflight shutdown rate twice as good as the Rb211.
There have only been two times that Rolls-Royce has produced a more reliable engine. 1. The Rb211-535 was more reliable than the PW2000. However, PW has since fixed the problems and the engines now enjoy virtually equal ratings.
2. The Trent 800- the trent 800 has marginally better reliability figures than the PW. The GE90 is a distant third.