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Politics : America Under Siege: The End of Innocence -- Ignore unavailable to you. Want to Upgrade?

To: joseph krinsky who wrote (1723)	9/13/2001 11:59:09 PM
From: Rob S.	Read Replies (2) \| Respond to of 27666

What the airlines are worried about is often not the initial cost. It is the increased weight. Every ounce of added weight costs the airline operator something line $300-$600 over the life of the airplane over it's lifetime in additional fuel costs. Boeing and Airbus calculate how much exactly for each airplane. Then the airlines keep meticulous flight records to determine fuel usage. After a fleet of new planes has been in service for just several months they can calculate the amount down to the penny. this is a simple calculation: Fuel cost per period of time (ex. per month) divided by weight of the aircraft times the expected life of the aircraft (x number of months).