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cloudboy
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767-300 Vs 787-8 250 Passengers

Wed Sep 03, 2014 2:09 am

I am sure to start a mix of type wars and flames, but I am not finding a specific answer to my question and not sure how to figure it out.

Most of the efficiency comparisons compare costs based on typical loads. So an airliner that carries more people would divide the overall costs by the number of available seats, and get a csm that way. But let's say that instead I figure out how many passengers I can reasonably expect to get on a set route, and then need to figure out which aircraft would be the most efficient for that number of passengers.

In particular, I am trying to figure out what aircraft would be best for a route about 5000 nautical miles carrying 250 passengers. Would the empty seats on a 787-8 balance out the fuel savings? Another words, is the fuel savings in large part due to extra carrying capacity?

P.s. I could have sworn I had asked this before, but I simply could not find it by searching.
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Pellegrine
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RE: 767-300 Vs 787-8 250 Passengers

Wed Sep 03, 2014 2:37 am

Quoting cloudboy (Thread starter):
In particular, I am trying to figure out what aircraft would be best for a route about 5000 nautical miles carrying 250 passengers. Would the empty seats on a 787-8 balance out the fuel savings? Another words, is the fuel savings in large part due to extra carrying capacity?

What class of service is your airline offering? What are the respective loads? Are you carrying cargo?

IMO the fuel savings is due to 1-the engines, 2-the improved aerodynamics, and 3-the fact that the 787 has a higher cruise flight level profile vs. the 767.
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mmo
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RE: 767-300 Vs 787-8 250 Passengers

Wed Sep 03, 2014 6:14 am

The 787 will burn about 21% less fuel on a similar leg when compared to the 767. ANA has reported like for like comparisons between the two aircraft.

The weight savings come from a broad range of improvements from the engines (better SFC), no bleed air for pressurization, lower empty weight and lower coefficient of drag.

There are also savings from a different maintenance schedule resulting in lower operating costs. All of those factors contribute to the 787 having a lower operating cost.
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KarelXWB
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RE: 767-300 Vs 787-8 250 Passengers

Wed Sep 03, 2014 7:24 am

Quoting mmo (Reply 2):
The 787 will burn about 21% less fuel on a similar leg when compared to the 767. ANA has reported like for like comparisons between the two aircraft.

About 21% on long-haul, and 17% on domestic routes.
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