MOSAIC Brief
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Official sources

Every regulatory statement links to one of these. The “checked” date is when our research last opened the source; it is not the date the source changed.

Rulemaking and notices

SourceIssuerPage displaysCheckedUsed in
Modernization of Special Airworthiness Certification final rule, 90 FR 35034 (July 24, 2025)Federal Aviation Administration / DOT—October 12, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs
Modernization of Special Airworthiness CertificationFederal Aviation Administration (DOT)—October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, “Sport pilot legal” is not the same as “light-sport aircraft”, What counts as an ultralight vehicle under FAA Part 103
Modernization of Special Airworthiness Certification; CorrectionFederal Aviation Administration (DOT)—October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies
Sport Pilot Practical Test Standards AlignmentFederal Aviation Administration (DOT)—October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Sport pilot checkrides and the new “B” test standards: what to ask before you schedule
Accepted Consensus Standards for Light-Sport Category Aircraft: Airplane, Glider, Powered Lift, and Gyroplane (NOA), plus FAA Light-Sport Category Aircraft page and Federal Register notice historyFederal Aviation AdministrationTuesday, October 6, 2026 (FAA Light-Sport Category Aircraft page); Monday, July 11, 2022 (FAA accepted_standards history page)October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Where to find the FAA's accepted MOSAIC consensus standards, and what the list means

Regulations (eCFR)

SourceIssuerPage displaysCheckedUsed in
14 CFR 61.316 - Performance limits and design requirements for the aircraft that a sport pilot may operateFederal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs, “Sport pilot legal” is not the same as “light-sport aircraft”, What counts as an ultralight vehicle under FAA Part 103
14 CFR 61.315 - Privileges and limits of my sport pilot certificateFederal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs, “Sport pilot legal” is not the same as “light-sport aircraft”
14 CFR 61.329 - Obtaining privileges to operate an aircraft at night (sport pilot)Federal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026Sport pilot night flying: what you need besides an endorsement
14 CFR 61.331 - Privileges to operate an aircraft with retractable landing gear or an airplane with a manual controllable pitch propeller (sport pilot)Federal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs
14 CFR 21.191 - Issue of experimental airworthiness certificatesFederal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026“Kit” doesn’t tell you which kind of airplane you’re building, “MOSAIC ready” is not a certification basis: what a statement of compliance tells you
14 CFR 103.1 - Applicability (ultralight vehicles)Federal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, What counts as an ultralight vehicle under FAA Part 103
14 CFR 1.1 - General definitionsFederal Aviation Administration / DOT—October 12, 2026Sport pilot night flying: what you need besides an endorsement
14 CFR 21.181 - DurationFederal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 12, 2026“Sport pilot legal” is not the same as “light-sport aircraft”, What counts as an ultralight vehicle under FAA Part 103
14 CFR 21.183 - Issue of standard airworthiness certificates for normal, utility, acrobatic, commuter, and transport category aircraftFederal Aviation Administration / DOT—October 12, 2026“MOSAIC ready” is not a certification basis: what a statement of compliance tells you
14 CFR 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraftFederal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026“Kit” doesn’t tell you which kind of airplane you’re building, Safety directive or airworthiness directive? What a light-sport owner must do with each, Where to find the FAA's accepted MOSAIC consensus standards, and what the list means, “MOSAIC ready” is not a certification basis: what a statement of compliance tells you, “Sport pilot legal” is not the same as “light-sport aircraft”, What counts as an ultralight vehicle under FAA Part 103
14 CFR 39.1 ApplicabilityFederal Aviation Administration / DOT—October 12, 2026Safety directive or airworthiness directive? What a light-sport owner must do with each
14 CFR 39.7 Operating a product that does not meet ADFederal Aviation Administration / DOT—October 12, 2026Safety directive or airworthiness directive? What a light-sport owner must do with each
14 CFR 61.1 - Applicability and definitionsFederal Aviation Administration / DOT—October 12, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs
14 CFR 61.23 - Medical certificates: Requirement and durationFederal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026Sport pilot night flying: what you need besides an endorsement
14 CFR 61.31 - Type rating requirements, additional training, and authorization requirementsFederal Aviation Administration / DOT—October 12, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs
14 CFR 91.7 Civil aircraft airworthinessFederal Aviation Administration / DOT—October 12, 2026Safety directive or airworthiness directive? What a light-sport owner must do with each
14 CFR Part 22 - Design, production, and airworthiness requirements for non-type certificated aircraft (Subparts A and B incl. 22.100)Federal Aviation Administration / DOT; text via eCFR (Office of the Federal Register & GPO; unofficial continuously updated edition)—October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Where to find the FAA's accepted MOSAIC consensus standards, and what the list means, “Sport pilot legal” is not the same as “light-sport aircraft”

FAA pages, guidance and standards

SourceIssuerPage displaysCheckedUsed in
AC 103-7 The Ultralight VehicleFederal Aviation Administration / DOT—October 12, 2026What counts as an ultralight vehicle under FAA Part 103
Airman Testing Community Advisory, August 2026 EditionFederal Aviation Administration / DOT—October 12, 2026Sport pilot checkrides and the new “B” test standards: what to ask before you schedule
Airman Testing Community Advisory, September 2026 Special EditionFederal Aviation Administration / DOT—October 12, 2026Sport pilot checkrides and the new “B” test standards: what to ask before you schedule
AC 61-146 - Pilot Certification and Operations for Sport Pilots, Flight Instructors with a Sport Pilot Rating, and Simplified Flight ControlsFederal Aviation Administration, Flight Standards Service (AFS-800)FAA AC landing page: Status Active; Date issued 2025-11-14 (no later "last updated" displayed). AC states effective October 22, 2025 (¶1.4).October 10, 2026Sport pilot night flying: what you need besides an endorsement, “Sport pilot legal” is not the same as “light-sport aircraft”
Sport-pilot night operations: 14 CFR 61.329 with 14 CFR 1.1 (night), 61.57, 61.113(i)/61.23(c), 91.205(c), 91.209, 91.151, 91.155, 91.157, 91.319, 91.327, 91.9, MOSAIC preamble and FAA Order 8130.2L Appendix DFederal Aviation Administration / DOT (text via eCFR)eCFR Title 14 up_to_date_as_of 2026-10-07 (latest issue date 2026-09-29)October 10, 2026Sport pilot night flying: what you need besides an endorsement
FAA Order 8130.2L Airworthiness Certification of Aircraft (Appendix D, Table D-1); Order 8130.2K; AC 65-32B; AC 65-23B; secondary EAA reportsFederal Aviation Administration (EAA for secondary excerpts)FAA directives listing (fetched 2026-10-10) shows 8130.2L Active, issued 2026-01-30; no 8130.2M listedOctober 10, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Who can sign an E-AB condition inspection? Light-sport repairmen, builders and mechanics
FAA Orders & Notices: subject class 8130 listing (checked for the current revision of Order 8130.2)Federal Aviation Administration—October 11, 2026MOSAIC is in effect: what changed, who it affects, and which date applies
Authoritative FAA / Federal Register material on the Oct 14, 2026 compliance date and A-vs-B applicability for sport pilot PTS FAA-S-8081-29B/-30B/-31BFAA / Office of the Federal RegisterFAA PTS page: Wednesday, September 16, 2026; ATCA Sept 2026 Special Edition PDF created 2026-09-16October 10, 2026Sport pilot checkrides and the new “B” test standards: what to ask before you schedule
FAA repairman page (S09) and MOSAIC maintenance FAQ PDF (S10)Federal Aviation AdministrationS09 footer: "Last updated: Thursday, October 1, 2026"; S10 has no displayed dateOctober 10, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Who can sign an E-AB condition inspection? Light-sport repairmen, builders and mechanics
14 CFR Parts 65, 91, 43, 21 (sections on repairmen certificates and condition inspections), plus MOSAIC final rule preamble (90 FR 35034, FR Doc 2025-13972)Office of the Federal Register / FAAeCFR title 14 up_to_date_as_of 2026-10-07 (latest_amended_on 2026-09-29)October 10, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Who can sign an E-AB condition inspection? Light-sport repairmen, builders and mechanics
Sport-pilot aircraft eligibility (14 CFR 61.315, 61.316, 61.303, 61.331, 61.31(e), 61.113(i), 61.23) versus light-sport aircraft certification (14 CFR 21.190, 22.1, 22.100, 21.181) with MOSAIC preamble and FAA guidanceFederal Aviation Administration / DOT (text via eCFR)eCFR Title 14 up_to_date_as_of 2026-10-07 (latest issue date 2026-09-29)October 10, 2026“MOSAIC ready” is not a certification basis: what a statement of compliance tells you, “Sport pilot legal” is not the same as “light-sport aircraft”
FAA Airmen Practical Test Standards page (re-check Oct 12, 2026)Federal Aviation Administration / DOT—October 12, 2026Sport pilot checkrides and the new “B” test standards: what to ask before you schedule
Modernization of Special Airworthiness Certification (MOSAIC) | Federal Aviation AdministrationFederal Aviation AdministrationApril 2, 2026October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Safety directive or airworthiness directive? What a light-sport owner must do with each
Sport Pilot | Federal Aviation AdministrationFederal Aviation AdministrationApril 15, 2026October 9, 2026“Sport pilot legal” is not the same as “light-sport aircraft”
MOSAIC Rule FAQs - Maintenance of Light Sport Category Aircraft (LSA)Federal Aviation Administration—October 9, 2026Who can sign an E-AB condition inspection? Light-sport repairmen, builders and mechanics, Safety directive or airworthiness directive? What a light-sport owner must do with each
MOSAIC Rule FAQs - Manufacture and Certification of Light-Sport Category Aircraft (LSA)Federal Aviation Administration—October 9, 2026“Kit” doesn’t tell you which kind of airplane you’re building, Where to find the FAA's accepted MOSAIC consensus standards, and what the list means, “MOSAIC ready” is not a certification basis: what a statement of compliance tells you, “Sport pilot legal” is not the same as “light-sport aircraft”
Light-Sport Category Aircraft | Federal Aviation AdministrationFederal Aviation AdministrationOctober 6, 2026October 9, 2026Where to find the FAA's accepted MOSAIC consensus standards, and what the list means, “MOSAIC ready” is not a certification basis: what a statement of compliance tells you, “Sport pilot legal” is not the same as “light-sport aircraft”
AC 61-146 - Pilot Certification and Operations for Sport Pilots, Flight Instructors with a Sport Pilot Rating, and Simplified Flight ControlsFederal Aviation Administration—October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies
AC 61-146, Pilot Certification and Operations for Sport Pilots, Flight Instructors with a Sport Pilot Rating, and Simplified Flight ControlsFederal Aviation Administration—October 9, 2026Retractable gear and manual controllable-pitch propellers: what a sport pilot needs
AC 20-27G, Certification and Operation of Amateur-Built Aircraft (Sept. 30, 2009)Federal Aviation Administration—October 12, 2026“Kit” doesn’t tell you which kind of airplane you’re building
FAA Airworthiness Directives pageFederal Aviation Administration / DOT—October 12, 2026Safety directive or airworthiness directive? What a light-sport owner must do with each
Watchlist: FAA MOSAIC hub resources - AC 61-146, AC 61-65, AC 65-32, AC 90-121, Order 8130.2, SAIB 2026-06Federal Aviation AdministrationThursday, April 2, 2026 (MOSAIC hub)October 9, 2026MOSAIC is in effect: what changed, who it affects, and which date applies, Safety directive or airworthiness directive? What a light-sport owner must do with each
FAA: Before You Build Your Own AircraftFederal Aviation Administration—October 12, 2026“Kit” doesn’t tell you which kind of airplane you’re building
FAA Amateur-Built Fabrication and Assembly Checklist (2009) Job Aid (Aug. 25, 2011)Federal Aviation Administration—October 12, 2026“Kit” doesn’t tell you which kind of airplane you’re building
FAA: Amateur-Built Aircraft KitsFederal Aviation Administration—October 12, 2026“Kit” doesn’t tell you which kind of airplane you’re building
FAA Airmen Practical Test Standards (PTS) list, plus FAA-S-8081-29B/-30B/-31B PDFs and eCFR 14 CFR 61.14Federal Aviation AdministrationSeptember 16, 2026October 9, 2026Sport pilot checkrides and the new “B” test standards: what to ask before you schedule