On July 24th, 2025 the FAA’s long-anticipated Modernization of Special Airworthiness Certification (MOSAIC) rule officially became law, ushering in one of the most significant shifts in light aviation regulation in decades. Designed to expand aircraft categories, modernize certification standards, and broaden pilot privileges, MOSAIC represents a major recalibration in how recreational and sport aviation is governed in the United States.

For pilots, builders, and aviation businesses alike, the rule brings exciting new opportunities responsibilities. From expanding the range of aircraft that qualify as Light Sport Aircraft (LSA) to revising medical and training requirements, MOSAIC is set to change the way many aviators approach flying. While its primary goal is to promote innovation and accessibility within GA, it also introduces new complexities that every stakeholder should try to understand.

This summary (pdf version here) breaks down the key changes, explains their practical impact, and highlights what the aviation community should expect in the months ahead as MOSAIC reshapes the landscape of U.S. flight:

As with any major regulatory shift, the full effects of MOSAIC will unfold over time, as pilots, manufacturers, and regulators adjust to the new framework. While the changes bring some uncertainty, they also mark a bold step toward a more inclusive and innovative future for general aviation.

As we've often said, complexity will continue to rise within GA - one way to simplify your shop (and your life) is to use software to help streamline, organize, and improve safety. With thousands of E-AB aircraft in our system, we're committed to helping experimental maintainers and operators thrive.

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