The Coachman From Australia, joined Apr 2001, 1437 posts, RR: 0 Posted (14 years 6 months 1 week 5 days 16 hours ago) and read 2405 times:
Are there different engines on the 'last few RR powered B747-400's' that were delivered to Qantas? There is a person in the Civil Forum who claims that the last few QF 744's have different engines than the earlier ones. If they are different they'd be -524H not -G would they not?
BabyJumbo-SP From Hong Kong, joined May 2001, 28 posts, RR: 0
Reply 5, posted (14 years 6 months 1 week 4 days 10 hours ago) and read 2356 times:
The 524G/H engines are undergoing a conversion by replacing the High Pressure module with a Trent700's HP. It is more efficient and provides more thrust. The modified engines will be called either 524G-T or 524H-T.
I think most of the 744/RR airlines are joining this conversion programme.
Jupiter2 From Australia, joined Jan 2001, 1009 posts, RR: 1
Reply 7, posted (14 years 6 months 1 week 3 days 21 hours ago) and read 2340 times:
The Coachman, the last 3 QF 744's were received last year and are RR powered. The 6 744LR'S on order however will have GE engines, must be impressed with the way the 3 GE machines they bought off Asiana and Malaysia are performing.
BTW these 3 aircraft are not specifically allocated any particular route and fly the full QF 744 network.
The Coachman From Australia, joined Apr 2001, 1437 posts, RR: 0
Reply 8, posted (14 years 6 months 1 week 2 days 16 hours ago) and read 2332 times:
Thanks all for the replies. A former QF mechanic I know (left 6 mths ago) wasn't sure whether the last few RR engined 744's (that Jupiter2 mentioned) have different engines. I know that there are 3 'ugly ducklings' (mechanics term ) that have GE engines. They mostly fly Pac routes but aren't restricted to those (as Jupiter2 has correctly stated).
But I suppose my original question hasn't been answered quite the way I wanted it to be. My mech friend has left, so he can't give me up to date info. I'll rephrase it.
Did the last few RR engined 744's delivered to QF have the -524G-T engines fitted? And does this mean that US-Australia flights are not weight-restricted anymore?
AJ From Australia, joined Nov 1999, 2405 posts, RR: 23
Reply 9, posted (14 years 6 months 6 days 14 hours ago) and read 2320 times:
The Qantas RB211-524Gs are steadily being modified to RB211-524G/Ts. The new aircraft (VH-OJS-U) have these engines in all four positions, other aircraft have anywhere from one to all four modified.
There is a significant reduction in fuel burn, which improves planning on long sectors.
The only 'H' model RB211s are on VH-NLH, the leased BA aircraft.