Design weights, sure, but perhaps in other departments than you think. New planes generally have higher operating weights than their predecessor, thanks to improvements in engine, but I don't think that's driven by the weight carried, fuel is still the biggest weight factor. Fuel is range. I think what the additional weight just means is that we're seeing bigger planes on shorter routes? Plus these luggage restrictions.
Not talking about the line-flights, they are half empty half the time anyway.
The seats became a lot lighter. Although I think that was just a way to have more seats+passengers.
Sure the satefy margin is probably huge. Actually, the FAA thought about forcing regional airlines to not only weigh luggage, but also passengers. Less people on board, smaller planes, I suppose the margins are smaller on lighter aircraft by law too. I'm not sure what the final decision was, probably still pending?
Well about the legal ramifications, you are right there, but it doesn't need to be a fat person that's kicked off. They can overbook based on seats now, surely they can get away with overbooking based on weight. So imagine, the Rugby team onboard and you and your kid get rescheduled. How nice...
Isn't it a safety risk for the fat person as well as the other passengers. Surely they'd be able to show that it isn't safe to have overweight persons on the aircraft in case of an emergency with some simulation. Okay, talking really overweight here, not just a bit fat.
Do they count the luggage of each person as part of the person or is it completely separate?
Well seperate for the weight calculations on each flight, but probably together when they design an aircraft to carry X persons.
What happens if there's like an anorexic chick or someone really light, do they still count as 85kg?
Yeah, that's why they can still use averages, instead of weighing you. So maybe every fat person need to buy them a drink after each flight. Not onboard, because then you'll have this weight-in-bladder issue again. LOL