If unpowered
, weighs less than 155 pounds; or
If powered:
• Weighs less than 254 pounds empty weight, excluding floats and safety devices which are intended for deployment in a potentially catastrophic situation; • Has a fuel capacity not exceeding 5 U.S. gallons; • Is not capable of more than 55 knots calibrated airspeed at full power in level flight; and • Has a power-off stall speed that does not exceed 24 knots calibrated airspeed. • Is a single-place machine.
FAA Advisory Circular 103-7 provides further guidance on the operation, weighing of ultralights
as well as other methods of showing compliance to FAR Part 103.
Direct links to both of these documents are available at www.SportAviation.org
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