[USMA:27185] Re: Air miles

[CarletonM]

In a message dated 2003-10-15 19:08:38 Eastern Daylight Time, [EMAIL PROTECTED] writes: In addition, allowance has also to be made for other increases, such as airport effects that require planes to always take off in a particular direction to allow for weather or community (say curfew over a particular suburb) effects. Not sure about that.  Takeoff direction is usually determined by wind direction, which varies, especially when there's a storm.  A flight Washington National-Chicago O'Hare, taking off to the north, does a lot less maneuvering than a flight taking off to the south.   It may simply be the number of nautical miles from origin airport center to destination airport center.   cm