Irehdna wrote:The 77L hasn't been very successful because its economics drop off around the range of 77E/77W (8000 mi/13000 km). Also, the 77E/W are still relatively economical at their extreme ranges. Routes like HKG-JFK are nowadays comfortably flown by the 77W, and HKG-JFK has for a while been one of the longest flights with more than 1 daily frequency.
Additionally, there was a time (2008-2015) where fuel prices further diminished the economic value of the 77L operating ULH. Those times are gone, and we are finally seeing successful ULR flights on 77L like AI's DEL-SFO. However, it seems that only the airlines who already have 77Ls are using them in such a way. Most airlines will have obviously preferred the A359 or B789 v. the 77L if seeking new aircraft.
I am interested to see whether a passenger 778 becomes a reality. The A358 and A338 had quite a few orders early on, but they went away in favour of larger jets.
JayinKitsap wrote:A look at the payload range charts says a lot
http://www.boeing.com/assets/pdf/commer ... 87sec3.pdf
http://www.boeing.com/assets/pdf/commer ... 2lr3er.pdf
The 772LR can carry fuel/payload of 450K lb at 8,000 mile range. but only 380K lb at 9,000 miles.
The 789 can carry fuel/payload of 305K lb at 8,000 mile range, 280K lb at 9,500 mile range.
The 772LR is an expensive plane to operate, it can be purchased with up to 3 aux tanks, but is best on routes less than 8,000 miles before its performance drops off. The 789 can carry only about 2/3 the 772LR at 8,000 miles, but its curve is flatter so has better economics compared to the 772LR at the 9,000 mile point.
The 789 has a max fuel capacity of 223K so at the 9,500 mile point it can only carry 55K of payload, about 220 pax.
777-8 will be quite better than the 772LR.
FriscoHeavy wrote:The 77L becomes more economical than the shorter ranged 77E at somewhere around 4,000 miles (I can't remember the exact number).
Stitch wrote:Normalizing to the Boeing ACAPs, the 777-200LR will 8250nm with a 55,000kg payload and baseline fuel (so no auxiliary fuel tanks) whereas a 787-9 will fly 5250nm with a 53,000kg payload.
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