This advisory circular provides guidance to the operators of ultralights in the United States. It discusses the elements which make up the definition of ultralight vehicles for the purposes of operating under Federal Aviation Regulation (FAR) Part 103. It also discusses when an ultralight must be operated as an aircraft under the regulations applicable to certificated aircraft.
This large file has almost all manufactures of ultralights, homebuilts, powered parachutes, etc. If you see an aircraft that looks interesting, chances are you will find the specs, options, price, dealer, address and telephone number in this file.