MOSAIC July 2026: The Light-Sport Certification Change
The second major MOSAIC effective date arrives on July 24, 2026. Here is what changes for light-sport certification and what changed earlier.
Organizational byline
Updated July 16, 2026
4 min read
The FAA's MOSAIC rule has two major effective dates. Most sport-pilot, repairman and maintenance provisions took effect on October 22, 2025. The certification provisions for light-sport category aircraft take effect on July 24, 2026.
That split is the key to understanding the current transition. July 24 is not the day every MOSAIC provision begins. It is the date the new light-sport aircraft certification framework becomes effective.
What MOSAIC is intended to change
MOSAIC—Modernization of Special Airworthiness Certification—amends rules covering the design, manufacture, airworthiness certification, operation, maintenance and alteration of light-sport category aircraft.
The FAA says the framework is intended to allow a wider range of aircraft and technology while using accepted consensus standards. The agency identifies potential light-sport categories including airplanes, gyroplanes, rotorcraft and powered-lift, as well as propulsion that can include turbine and electric systems.
Eligibility is not established by a marketing label. The applicable regulations, aircraft certification basis, operating limitations, accepted standards and pilot privileges all still matter.
The July 24, 2026 certification change
The FAA's manufacturing and certification FAQ says new certification requirements apply to new light-sport aircraft and new LSA kits delivered on or after July 24, 2026. The new framework relies on consensus standards accepted by the FAA for the design, production and airworthiness requirements in the new Part 22 structure.
The FAA also explains that consensus standards accepted before July 24 remain relevant for certain work on aircraft and kits delivered under the earlier framework, including evaluating alterations and repairs to existing LSA and some experimental kit certification situations.
For manufacturers and applicants, the practical question is therefore not simply whether an aircraft fits an expanded concept of light sport. It is which accepted standards and regulatory pathway apply to that aircraft, delivery date and certification action.
What changed in October 2025
The earlier effective date covered several changes visible to pilots and maintainers. The FAA's MOSAIC page lists expanded sport-pilot aircraft privileges and pathways for:
- retractable landing gear;
- manually controllable-pitch propellers;
- high-performance and complex airplanes;
- night operations with the required training, endorsement and medical qualification;
- certain helicopter privileges limited to qualifying light-sport helicopters with simplified flight controls; and
- broader light-sport repairman and maintenance privileges.
These privileges are conditional. Training, instructor endorsements, medical or BasicMed requirements, aircraft qualifications and operating limitations can apply. A pilot certificate alone is not enough to assume every expanded operation is authorised.
What pilots should verify
Before relying on a MOSAIC-expanded privilege, verify four separate layers:
- Pilot privilege: Does the regulation permit the operation for the certificate and endorsements held?
- Aircraft qualification: Is the specific aircraft eligible under the applicable rule and documentation?
- Operating limitation: Do the aircraft records or operating limitations restrict the proposed use?
- Insurance and local requirements: Does the policy, rental agreement or operator procedure impose a narrower limit?
The FAA's sport-pilot material and Advisory Circular 61-146 are the appropriate starting points for the certification and endorsement side. An instructor or examiner should work from the current text, not a simplified feature list.
What owners and maintainers should verify
MOSAIC changes do not erase the need to establish who may perform maintenance and return an aircraft to service. Owners should identify the aircraft's certificate category, operating limitations, applicable maintenance rule, required inspection and the privileges of the person doing the work.
For a transaction or modification, keep the certification and maintenance questions separate. A broader aircraft definition does not automatically approve a particular alteration or change the records required to document it.
What manufacturers should monitor
The FAA says new consensus standards are being developed for the post-July 24 framework and will be publicly accepted through the Federal Register process. Manufacturers should therefore monitor the FAA MOSAIC resources and notices identifying accepted standards.
The timing of a standard's acceptance can affect a certification plan. A design may fit the policy direction but still need an accepted standard, compliance evidence and the appropriate statement of compliance before delivery.
Bottom line
July 24, 2026 is the certification effective date in MOSAIC's staged rollout. It brings the new light-sport category certification requirements into effect; it does not restart the sport-pilot and maintenance provisions that took effect in October 2025.
For a real aircraft or flight, work through pilot privileges, aircraft eligibility, operating limitations and maintenance authority separately. MOSAIC expands the framework, but the specific documents still decide what is legal.
