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A 777-300 has a maximum take off weight of 660,000 lbs of which 312,000lbs can be fuel. So an extra 100 lbs on every passenger is a drop in the bucket! https:

A 777-300 has a maximum take off weight of 660,000 lbs of which 312,000lbs can be fuel. So an extra 100 lbs on every passenger is a drop in the bucket! https://courses.washington.edu/ie337/Boeing%20Tour%20Facts.pdf https://courses.washington.edu/ie337/Boeing%20Tour%20Facts.p...

manwe150 5y ago
100 lbs * 500 passengers is 50k pounds or about 10% of the max takeoff weight quoted there. Those numbers seem likely to be over-estimates, but that seems not inconsequential? Edit: the plane holds 328-550 depending on seat configuration per the above link. I went with the upper end of that range per consideration of the “safety considerations” indicating it is the upper end of that range that is being reconsidered.
- rhodozelia 5y ago
  A 777-300 holds 388 passengers, so 39,000 lbs extra would be significant. Is the average American 100 lbs heavier than the average person from the rest of the world? Probably nowhere near that.
  - gield 5y ago
    22 kg (48.6 lbs) according to [1]. [1] https://en.wikipedia.org/wiki/Human_body_weight https://en.wikipedia.org/wiki/Human_body_weight
t0mas88 5y ago
A 777 is not a mide sized airliner, wide body aircraft for long haul have very different calculations because their flight can easily be over 12 hours long. The problem case for weight are the regional jets (E190 etc) and to a lesser degree the 737/A320 family. Those tend to be weight limited enough that you need to offload passengers or baggage if it's too warm outside.
AceyMan 5y ago
fwiw, the old rule of thumb when I was trained is "it cost you one pound of fuel for every three that you carry", where 'cost' is in the form of increased burn (decreased efficiency). Of course, fuel is no different than any other weight, so the same rule would apply to the revenue load (people, bags, freight)—for every three pounds it cost you one pound of fuel. Incidentally, I've always felt ticketing should be pro-rata wrt weight. Well, where 'always' is defined as 'since I obtained my FAA dispatcher license.' /Acey

manwe150 5y ago

100 lbs * 500 passengers is 50k pounds or about 10% of the max takeoff weight quoted there. Those numbers seem likely to be over-estimates, but that seems not inconsequential? Edit: the plane holds 328-550 depending on seat configuration per the above link. I went with the upper end of that range per consideration of the “safety considerations” indicating it is the upper end of that range that is being reconsidered.

rhodozelia 5y ago
A 777-300 holds 388 passengers, so 39,000 lbs extra would be significant. Is the average American 100 lbs heavier than the average person from the rest of the world? Probably nowhere near that.
- gield 5y ago
  22 kg (48.6 lbs) according to [1]. [1] https://en.wikipedia.org/wiki/Human_body_weight https://en.wikipedia.org/wiki/Human_body_weight

t0mas88 5y ago

A 777 is not a mide sized airliner, wide body aircraft for long haul have very different calculations because their flight can easily be over 12 hours long. The problem case for weight are the regional jets (E190 etc) and to a lesser degree the 737/A320 family. Those tend to be weight limited enough that you need to offload passengers or baggage if it's too warm outside.

AceyMan 5y ago

fwiw, the old rule of thumb when I was trained is "it cost you one pound of fuel for every three that you carry", where 'cost' is in the form of increased burn (decreased efficiency). Of course, fuel is no different than any other weight, so the same rule would apply to the revenue load (people, bags, freight)—for every three pounds it cost you one pound of fuel. Incidentally, I've always felt ticketing should be pro-rata wrt weight. Well, where 'always' is defined as 'since I obtained my FAA dispatcher license.' /Acey