Definition
A factory-built, ready-to-fly aircraft certificated by the FAA in the Light-Sport Aircraft category, manufactured to industry consensus standards rather than to traditional FAA type certification standards. An S-LSA must meet the FAA's light-sport definition (limits on weight, stall speed, maximum speed, seating, and other parameters) and may be used for personal flying, flight training, and rental.
Plain English
A small, simple, factory-built airplane that the FAA has approved for sale ready to fly. It is built to a lighter set of rules than ordinary certified airplanes, and it can be used for personal flying, instruction, or rental.
Context Anchor
You may see this term in aircraft paperwork, rental agreements, sport pilot training, maintenance records, and discussions of what aircraft a sport pilot may fly.
Derivation
"Special" here distinguishes the factory-built version from the "Experimental" Light-Sport version (E-LSA), which is owner-built or kit-built. In FAA usage, "Special" signals that the aircraft holds a special airworthiness certificate issued under the light-sport rule rather than a standard airworthiness certificate.
Why Pilots Care
Determines the maintenance requirements, pilot privileges, and operating limitations that apply to the aircraft.
Intuition Check
Do not read “special” as meaning rare or custom-built. Here it means the aircraft has a specific FAA airworthiness certificate in the light-sport category.
Example Sentence 1
The flight school added a Special Light-Sport Aircraft to its fleet so it could offer sport pilot training and rentals.
Example Sentence 2
Before flying a Special Light-Sport Aircraft, the owner must ensure it complies with the manufacturer's maintenance and inspection program.