Definition
A single-occupant aeronautical vehicle, used or intended to be used for sport or recreation only, that meets specific weight, speed, and fuel limits set out in 14 CFR Part 103. It is not classified as an aircraft and does not require FAA airworthiness certification or a pilot certificate to operate.
Plain English
A very small, light, one-person flying machine flown only for fun. Because it is so light and slow, the FAA does not treat it as a regular aircraft, so the pilot does not need a pilot's license and the vehicle does not need to be certified.
Context Anchor
You may see this term in FAA rules, airport discussions, chart notes, or local procedures when very light sport or recreational flying machines operate near an airport.
Derivation
From 'ultra' (Latin, meaning 'beyond' or 'extremely') and 'light' (low weight). The name signals that these vehicles fall below the weight threshold the FAA uses to define an aircraft.
Why Pilots Care
Determines whether an aircraft can be operated without a pilot certificate, medical certificate, or registration, while still requiring the pilot to follow strict operating limits for safety.
Intuition Check
Do not assume “ultralight vehicle” just means any very small airplane. In FAA use, it means a specific legal category with limits on things like weight, fuel, speed, and number of occupants.
Example Sentence 1
The pilot spotted an ultralight vehicle flying low over the open field well clear of the traffic pattern.
Example Sentence 2
Because the aircraft met ultralight vehicle criteria, the owner was not required to obtain an FAA registration number.