QUESTION: What is the weight of the plane with all the equipment on it? ANSWER from Terry Rager on October 16, 1995: Great question!! The airplane weighed 141,000 pounds before we put the telescope and computers on. Currently, the aircraft weighs 172,000 lbs. and we can put cargo and fuel on to raise the weight to 325,000 lbs. For a normal 8 hour flight the airplane weighs 278,000 lbs. Thanks!!! Terry Rager, Project Pilot, KAO