FAA’s MOSAIC Phase 2: A New Era for Light-Sport Aviation Starting July 24
A landmark moment for general aviation is just days away: on July 24, 2026, the second and most transformative phase of the FAA’s MOSAIC rule (Modernization of Special Airworthiness Certification) takes full effect. This ushers in the most significant overhaul of light-sport aircraft regulations since the category’s inception in 2004.
Under MOSAIC Phase 2, the FAA is formally removing the old 1,320-pound maximum takeoff weight limit for light-sport category aircraft. In its place, performance-based stall speed standards are being introduced. New light-sport category aircraft can now be certified with up to four seats, a maximum level-flight speed of 250 knots CAS. They are also eligible to use electric propulsion, turbine engines, and retractable landing gear. Additionally, a new FAA regulatory part — 14 CFR Part 22 — also takes effect, governing design, production, and airworthiness requirements for non-type-certificated aircraft.
The Experimental Aircraft Association (EAA) has hailed MOSAIC as “the most monumental and important step recreational aviation has taken in more than 20 years.” The rule is expected to open enormous opportunities for manufacturers to bring modern, innovative aircraft to market at lower certification costs. It could also expand access to general aviation for the nearly 500,000 U.S. pilots who hold certificates above the sport pilot level.
EAA AirVenture Oshkosh 2026, running from July 20–26 at Wittman Regional Airport in Wisconsin, is expected to showcase a wave of MOSAIC-compliant aircraft designs to the public for the first time.
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