The Bailey-Moyes Tempest, is an Australian-American high-wing, strut-braced, single-seat, microlift glider that was designed by Bob Bailey of Florida, United States and produced by Moyes Microlights of Waverley, New South Wales, Australia. The Tempest is a development of the Advanced Aeromarine Sierra and was designed to be towed aloft behind an ultralight aircraft. The aircraft's 42 ft (12.8 m) span wing is made from aluminium tubing covered in Dacron and is supported by a single lift strut on each side, plus a jury strut. The fuselage is made from fiberglass and features a canopy that is hinged on one side for cockpit access. The cockpit is 22 in (56 cm) wide. The landing gear is either a monowheel gear or, optionally, bicycle gear. Although very light, with a standard empty weight of 200 lb (91 kg), the Tempest does not qualify under the US FAR 103 Ultralight Vehicles regulations as a hang glider, neither is it foot-launchable. When it was available the aircraft was supplied as a kit, that required an estimated 200 hours to complete, or as a complete ready-to-fly aircraft. In 1998 the kit was US$10,000 and the complete aircraft was US$12,500. Twelve were reported as flying by the end of 2001.