"There's an ICAO standard weight for a passenger which you can use if you're carrying more than a certain number of passengers. Unsurprisingly a few years ago it was revised upwards, I think to 83kg."
Which is probably why, on a school exchange visit to France many years ago, 40 kids, aged between 12 and 16 were manually rearranged into suitable seats on the first leg of the journey flying a Trident down to Heathrow. A small enough aircraft that the unusually large number of little people meant taking their approximate weights into consideration in the seating plan. There was none of that kerfuffle flying the much larger Tristar across to Charles De Gaulle.
Biting the hand that feeds IT
