CXB77L From Australia, joined Feb 2009, 1535 posts, RR: 3 Reply 2, posted (3 months 3 weeks 2 days 10 hours ago) and read 4055 times:
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ET has the higher thrust engines. Makes sense, given that ADD is at altitude.
I'm not aware of any other airlines having the GE90-115 option on their 77Ls, although EK might do given the very long haul routes that they fly out of a hot DXB.
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BMI727 From United States of America, joined Feb 2009, 11547 posts, RR: 27 Reply 4, posted (3 months 3 weeks 2 days 9 hours ago) and read 4035 times:
Quoting Max Q (Reply 3): I'm not 'up' on all the codes, is that Ethiopian ?
It's Addis Ababa, which happens to be 7600 feet above sea level.
Keep in mind that the distribution of thrust options could change as the only change is in the software. Should, say, Delta buy some 77Ls from Ethiopian, they could derate the engines to 110,000 lbs. Or bump it up if FedEx wanted a subfleet to carry more weight from hot and high destinations or something like that.
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Max Q From United States of America, joined May 2001, 2617 posts, RR: 19 Reply 5, posted (3 months 3 weeks 2 days 9 hours ago) and read 4023 times:
Quoting BMI727 (Reply 4):
It's Addis Ababa, which happens to be 7600 feet above sea level.
Keep in mind that the distribution of thrust options could change as the only change is in the software. Should, say, Delta buy some 77Ls from Ethiopian, they could derate the engines to 110,000 lbs. Or bump it up if FedEx wanted a subfleet to carry more weight from hot and high destinations or something like that.
So it is Ethiopian ?!
I realize the thrust level can be customised, just trying to find out who uses the full 115k on their LR's,
Thank you.
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zkojq From New Zealand, joined Sep 2011, 263 posts, RR: 0 Reply 9, posted (3 months 2 weeks 2 days 8 hours ago) and read 2447 times:
Quoting CXB77L (Reply 2): I'm not aware of any other airlines having the GE90-115 option on their 77Ls, although EK might do given the very long haul routes that they fly out of a hot DXB.
According to planespotters.net, Emirates has a mix of both GE90-110 and GE90-115 powered 77Ls.
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seabosdca From United States of America, joined Sep 2007, 3754 posts, RR: 4 Reply 10, posted (3 months 2 weeks 2 days 5 hours ago) and read 2415 times:
Quoting zkojq (Reply 9): According to planespotters.net, Emirates has a mix of both GE90-110 and GE90-115 powered 77Ls.
Planespotters.net is not a reliable source for information at that level of detail. I think to know for sure we'd really have to have someone from each 77L operator post here.
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Stitch From United States of America, joined Jul 2005, 23618 posts, RR: 80 Reply 11, posted (3 months 2 weeks 2 days 1 hour ago) and read 2330 times:
Quoting krisyyz (Reply 8): That is what GE's press release stated when AC ordered the B777s however all of AC's B77Ls have the 110k rating.
And I think that is part of the confusion. GE seems to just quote the maximum thrust for the family as opposed to breaking it down by model so in a mixed order of 77Ws and 77Ls/77Fs, GE's release would imply they all had the GE90-115B when it may very well be the case that the 77Ws have the GE90-115 and the 77L/77F have the GE90-110B (at 110,000 pounds of thrust).
Caryjack From United States of America, joined May 2007, 239 posts, RR: 0 Reply 13, posted (3 months 1 week 6 days 13 hours ago) and read 1896 times:
Quoting BMI727 (Reply 4): Or bump it up if FedEx wanted a subfleet to carry more weight
How significant is a thrust change? I understand there is a cost and that it affects maintenance schedules, fuel burn, engine life and a few other things; but how often is it done?
Thanks,
Cary
dispatchguy From United States of America, joined Jan 2006, 1184 posts, RR: 2 Reply 14, posted (3 months 1 week 6 days 3 hours ago) and read 1811 times:
Looking at the SCAP performance files, the only real difference is in takeoff and landing performance.
The inflight file (for climb, cruise and descent) is the same file if you are planning for the -110 or the -115.
The takeoff and landing SCAP files are different, however, so there is where the performance difference lies; since I dont have a BPS takeoff/landing module for the 772/115, I cant compare the performance, but my guess is that you would get slightly better performance off of a shorter runway with the 115 versus the 110 flavor of the GE90 engine.
Therefore, with the airports that FDX operates their 777s to, that incremental increase in performance probably isnt required. Now, if they were to want to start a JNBMEM nonstop for example, I could see them wanting it then due to the field elevation at JNB, but the 110 also has a thrust bump option as well.
And its all configurable by setting pins on the FADEC.
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