MOSAIC — the FAA's Modernization of Special Airworthiness Certification rule — is now fully in effect, with the final phase taking hold on July 24, 2026. It's the most significant change to light-sport and Sport Pilot rules in over two decades, and it's especially relevant if you're weighing a lower-cost, lower-hour path into flying.

What actually changed

MOSAIC replaces the old weight-based definition of a "light-sport aircraft" (roughly 1,320 pounds) with a stall-speed-based definition instead. That sounds technical, but the practical effect is simple: a meaningfully wider range of aircraft now qualifies as light-sport, including some models that didn't fit under the old weight cutoff.

Alongside that, Sport Pilot privileges expanded. Sport Pilots can now fly qualifying aircraft with up to four seats and can add night flying, retractable-gear, and controllable-pitch-propeller privileges with the required additional training — none of which were previously available to Sport Pilots.

What stayed the same

The core appeal of the Sport Pilot certificate hasn't changed: you still don't need an FAA medical certificate. A valid U.S. driver's license continues to stand in for a medical certificate for daytime VFR flying in qualifying aircraft. That's been true since the original Sport Pilot rule and MOSAIC didn't touch it.

One limit that didn't change: even in a qualifying four-seat aircraft, a Sport Pilot can still only carry one passenger.

Before MOSAIC

  • Light-sport defined by weight (~1,320 lb)
  • 2 seats max, day-VFR only
  • No night, retractable-gear, or controllable-prop privileges

After MOSAIC (fully in effect)

  • Light-sport defined by stall speed, not weight
  • Up to 4 seats, still 1 passenger max
  • Night, retractable-gear & controllable-prop privileges available with training

Why this matters if you're considering flight training

MOSAIC makes the no-medical-required route into flying more capable than it used to be, without changing what made it appealing in the first place. If you're someone who wants to fly for fun, doesn't need to carry more than one passenger, and would rather skip the FAA medical exam process, a light-sport path is worth a serious look — and it's now less of a compromise than it was before MOSAIC.

This is exactly the gap our Enthusiast Light Sport Certificate is built around: fewer required hours, no FAA medical certificate, and a lower cost of entry than a full Private Pilot Certificate. You can see current program details on our Flight Training page.

This post summarizes the MOSAIC rule for general understanding. Specific aircraft eligibility depends on the individual aircraft's certification and stall speed — talk to your instructor or the aircraft's records before assuming an aircraft qualifies.