Claim: The Farrington Twinstar, an American two-seat autogyro, has an empty weight of three hundred twenty kilograms  and a gross weight of five hundred forty kilograms.
Evidence: The Farrington Twinstar is an American two-seat autogyro that was designed and produced by Farrington Aircraft of Paducah, Kentucky, a company owned by Don Farrington. The aircraft has a typical empty weight of 700 lb (320 kg) and a gross weight of 1,200 lb (540 kg), giving a useful load of 500 lb (230 kg).