"Fevric J Glandules" wrote in message
om...
On Mon, 14 Jul 2008 10:50:22 +0100, Jon Green wrote:

Look at it another way: the extra fuel burnt from the additional weight
of you and your baggage, since the plane was going to fly that route
anyway, was miniscule. You could probably offset it by growing a couple
of rows of carrots.

A post in sci.aeronautics.airliners from a guy with a boeing.com
email address disagrees:
http://yarchive.net/air/airliners/mpg.html

"It will vary pretty widely depending on the airplane, the engines, the
condition of the engines, the range the airplane is intending to fly, and
the weather (hotter is always worse). All that to say a precise answer is
very difficult and will wobble a great deal.

Another way you could do the sums is start with the oft-quoted "fact" that
tankering fuel costs 3% per hour.

--
Tim Ward - posting as an individual unless otherwise clear
Brett Ward Limited - www.brettward.co.uk
Cambridge Accommodation Notice Board - www.brettward.co.uk/canb
Cambridge City Councillor