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Boeing 777 Engine Types?

Mon Jul 03, 2000 9:41 am

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?

Jason
 
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sammyk
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RE: Boeing 777 Engine Types?

Mon Jul 03, 2000 10:14 am

American Airlines also has Rolls Royce Trents on their 777s, not sure where you read otherwise, but they were wrong.

Not sure how they compare, but surely you will get A LOT of opinions from others on this board.

Sammy
 
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RR Vs. GE 777

Mon Jul 03, 2000 10:21 am

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.
R
 
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AA737-823- Not True

Mon Jul 03, 2000 10:42 am

"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.