Date: 20 Nov 98 02:30:59 From: firstname.lastname@example.org (MCL757) Organization: AOL http://www.aol.com References: 1
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>Recently I know that B737-400/500 dosen't have fuel dump system ? > >why ? The reson for fuel dump systems is because large long range aircraft carry a lot of fuel which, in normal circumstances, will be burned off during the trip, and then there will be a landing without all of that fuel on board. But, if there is a problem which requires a return to the airport, the fuel must be dumped to lower the weight of the aircraft down to the maximum landing weight to avoid bending the airplane. Widebody aircraft carry a lot of fuel which adds up to a lot of weight. If the airframe was designed to be able to cope with a landing with all the fuel on board it would be way too heavy. Smaller aircraft like the 737 don't have fuel dump systems because the fuel doesn't usually cause the aircraft to be over its maximum landing weight. The maximum takeoff weight and the maximum landing weight are much closer together on a smaller aircraft. Matt in Seattle, Student Pilot... My Unofficial Alaska Airlines Mailing List is at AlaskaAirlines@onelist.com ----Fly Alaska Airlines, Horizon Air, and Continental Airlines!!!