US Definition of "ultralight"
Regulation of ultralight aircraft in the United States is covered by the Code of Federal Regulations Title 14 (Federal Aviation Regulations) Part 103 or 14 CFR Part 103, which defines an "ultralight" as a vehicle that:
- has only one seat
- Is used only for recreational or sport flying
- Does not have a U.S. or foreign airworthiness certificate
- If unpowered, weighs less than 155 pounds
- If powered:
- Weighs less than 254 pounds (115 kg) empty weight, excluding floats and safety devices
- Has a maximum fuel capacity of 5 U.S. gallons (19 L);
- Has a top speed of 55 knots (102 km/h; 63 mph) calibrated airspeed at full power in level flight
- Has a power-off stall speed of 24 knots (45 km/h; 28 mph) calibrated airspeed or less
Read more about this topic: Ultralight Aircraft (United States)
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