The engine is used to power homebuilt and ultralight aircraft. It remains a popular configuration for amphibians and small homebuilt and ultralight aircraft. Offered here on weekends are sightseeing flights by motorized aircraft, motor glider, glider and ultralight. There are three general classifications for hikers&colon; Traditional, Lightweight, and Ultralight. It was designed for use on ultralight aircraft. The aircraft was built to comply with FAA part 103 rules for ultralight aircraft. Co. KG of Austria for use in ultralight aircraft. The Airborne Redback, an Australian ultralight trike, was also named after the spider. The company specializes in the design and manufacture of ultralight trikes. Similar systems are common on ultralight aviation too. Hagerstrom maintained his love of flying, and in 1992 planned to buy an ultralight aircraft. Some countries that require formal certification frequently do so through non-government ultralight aviation organizations. This limits solar cars to ultralight composite bodies to save weight. Rods are usually of ultralight to medium-heavy action. It is considered a ULDB or ultralight displacement boat, a Sportsboat.