StacksVerified U.S. regulatory reference

14 CFR §103.1

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This part prescribes rules governing the operation of ultralight vehicles in the United States. For the purposes of this part, an ultralight vehicle is a vehicle that:
  1. (a)Is used or intended to be used for manned operation in the air by a single occupant;
  2. (b)Is used or intended to be used for recreation or sport purposes only;
  3. (c)Does not have any U.S. or foreign airworthiness certificate; and
  4. (d)If unpowered, weighs less than 155 pounds; or
  5. (e)If powered:
    1. (1)Weighs less than 254 pounds empty weight, excluding floats and safety devices which are intended for deployment in a potentially catastrophic situation;
    2. (2)Has a fuel capacity not exceeding 5 U.S. gallons;
    3. (3)Is not capable of more than 55 knots calibrated airspeed at full power in level flight; and
    4. (4)Has a power-off stall speed which does not exceed 24 knots calibrated airspeed.