Originally Posted by
Javan69
Yes, but what's the largest one you've flown on that they had to adjust seating for?
Around 10 years ago, during the mad cow scare in Britain, I was on a SYD-LAX 744 loaded with a couple tons of Australian beef in the belly (of the plane

). I think the last 2 or 3 rows of lower deck C were reseated. During boarding, those seats had the tray tables out so as to make it clear that no one was to sit in them.
Originally Posted by
weero
... Still not construed enough for folks not to use it.
When the HKG gang tried to weigh me, at least post #16 tried to pin their ridiculous behaviour on weight and balancing. And that was only differential weight, not even whole seats, and it was on a 747.
In your case, weighing each pax individually can be construed as an affront to privacy, but I can understand why UA wanted to do it for statistical purposes. I doubt the situation you encountered was for addressing weight and balance on your flight; still, alluding to my own experience, this can well happen on a 747.