Re: TWA800 Fuel Tank

Date:         01 Dec 97 02:33:52 
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Gerard Foley wrote:
> To reduce the probability of a fuselage mounted fuel tank exploding,
> as did the tank in the 747 on TWA Flight 800, why not fill such a tank
> first and empty it last.   Very few airliners exhaust their fuel reserves
> in flight.

You can blame the engineers that constructed the B747 and most other
aircraft for that.

The problem is that you must fill the wing tanks before the center tanks
due to a structural limits in the wing root.  If not, you take a weight
penality for departure. The amount of the penalty varies with each