---
kind: "section"
citation: "14 C.F.R. § 103.1"
title: "14"
number: "103.1"
heading: "Applicability."
url: "https://uscodex.org/cfr/14/103.1"
---

# §103.1. Applicability.


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:

- (a) Is used or intended to be used for manned operation in the air by a single occupant;
- (b) Is used or intended to be used for recreation or sport purposes only;
- (c) Does not have any U.S. or foreign airworthiness certificate; and
- (d) If unpowered, weighs less than 155 pounds; or
- (e) If powered:
  - (1) Weighs less than 254 pounds empty weight, excluding floats and safety devices which are intended for deployment in a potentially catastrophic situation;
  - (2) Has a fuel capacity not exceeding 5 U.S. gallons;
  - (3) Is not capable of more than 55 knots calibrated airspeed at full power in level flight; and
  - (4) **Has a power-off stall speed which does not exceed 24 knots calibrated airspeed.**

## Notes

### Authority

Authority: 49 U.S.C. 106(g), 40103-40104, 40113, 44701.

### Source

Source: Docket 21631, 47 FR 38776, Sept. 2, 1982, unless otherwise noted.