I have to say it’s not something I would get really worried about (the marginal MTOW possible exceedance)?
a) On a widebody with a reasonable amount of airframe hours and a decent passenger load, I’d be surprised if the *actual* weight of the aircraft was within a couple of tons either way of what you thought it was.
b) What’s the worst that can happen? Even with a V1 cut is a couple of hundred kg either way going to make a difference? Just different line up and thrust setting techniques can affect things more if you’re RLL.
c) Who’s counting, anyway?
d) Even if I was worried, I certainly wouldn’t ride the brakes on an above-idle thrust setting. Just when you might need all of the braking performance, you deliberately remove some of it? Much rather take +500kg with cold brakes, thank you!
Betteridge’s Law applies here, I think.
Last edited by FullWings; 22nd Aug 2017 at 21:48.