FAA Announces Finalization Of MOSAIC

FAA Announces Finalization Of MOSAIC

Transportation Secretary Sean P. Duffy, along with FAA and EAA officials, announce the final MOSAIC rule at EAA AirVenture Oshkosh 2025. (Photo by EAA)

MOSAIC, which stands for Modernization of Special Airworthiness Certification, is an FAA rule aimed at updating regulations for Light Sport Aircraft (LSA) and Sport Pilot privileges. It was finalized on July 22, 2025, and will take effect in stages: changes for sport pilots and light-sport repairmen in 90 days, and changes for LSA certification in 365 days, according to the Department of Transportation (.gov). The rule expands the types of aircraft eligible for LSA certification, allowing for larger and more capable aircraft, and increases the operating privileges for Sport Pilots.

Key changes under MOSAIC

Expanded LSA Category:
The MOSAIC rule broadens the types of aircraft that can be classified as LSAs, including larger, more advanced airplanes, rotorcraft, and powered-lift aircraft (like eVTOLs).

Increased Aircraft Performance:
The rule eliminates the previous weight restrictions for LSAs and instead uses performance-based criteria, such as stall speed, to determine eligibility.

Expanded Sport Pilot Privileges:
Sport pilots will gain the ability to operate a wider range of aircraft, including those with higher stall speeds and faster airspeeds. They will also be allowed to fly at night, under IFR, and engage in some limited commercial activities.

Focus on Safety:
The rule maintains a strong emphasis on safety, with the goal of encouraging the adoption of factory-built LSAs and reducing accidents associated with amateur-built aircraft.

Technological Advancements:
MOSAIC reflects the FAA’s recognition of technological advancements in aircraft design and performance.

Increased Flexibility:
The rule allows for greater flexibility in aircraft design, enabling manufacturers to produce more capable and versatile LSAs.

Implementation Timeline

Pilot and Repairman Changes:
Changes related to sport pilot and light-sport repairman privileges will take effect 90 days after the final rule is published in the Federal Register, according to the FAA.

Aircraft Certification Changes:
Changes related to aircraft certification will take effect 365 days after publication in the Federal Register.