Sources
What this site is built from
Only public-domain U.S. government material. Every rule, number and definition on this site was checked against the text of these documents. When a regulation and a handbook disagree, the regulation wins; when your aircraft's manufacturer data is more specific, it governs the task.
| Document | Edition / date used | Used for |
|---|---|---|
| 14 CFR parts 1, 21, 22, 39, 43, 45, 47, 65, 91, 145, 147 (eCFR) | eCFR current as of October 4, 2026 | All regulation text and citations. eCFR Title 14 |
| MOSAIC final rule — Modernization of Special Airworthiness Certification (FR Doc. 2025-13972) | 90 FR 35034, July 24, 2025; effective Oct 22, 2025 and July 24, 2026 | Before/after comparison, effective dates, preamble explanations. Federal Register |
| MOSAIC correction (FR Doc. 2025-15649) | 90 FR 40041, Aug 18, 2025 | Editorial fixes only (authority citations, amendatory instructions for 61.315/61.415, a table header) — no change to the maintenance rules cited here |
| Accepted consensus standards for light-sport category aircraft (FR Doc. 2026-14298) | 91 FR 43524, July 16, 2026 | Which ASTM standards the FAA accepts as means of compliance |
| AC 65-32B, Certification of Repairmen (Light-Sport) | 11/14/25 | Light-sport repairman eligibility, privileges, limitations, application |
| AC 43.13-1B (with Change 1), Acceptable Methods, Techniques, and Practices — Aircraft Inspection and Repair | 9/8/98; Chg 1 9/27/01 | Hardware, safety wire, torque, rivets, corrosion, fluid lines, wiring |
| AC 43.13-2B, Aircraft Alterations | — | Background only |
| FAA-S-ACS-1, Aviation Mechanic General, Airframe, and Powerplant ACS | Nov 1, 2021 (incorporated by reference, 14 CFR 65.23) | Subject areas; LSR-M course content basis (65.107(d)) |
| FAA-G-ACS-1, Companion Guide to the Mechanic ACS | With Changes 1 & 2 | Written test codes, question counts, time, passing score, retest |
| FAA-H-8083-30B, Aviation Maintenance Technician Handbook — General | current edition | Human factors, materials, inspection, fire safety |
| FAA-H-8083-31B, AMT Handbook — Airframe | current edition | Rivets, hydraulic fluids, fuels |
| FAA-H-8083-32, AMT Handbook — Powerplant | current edition | Engine theory, ignition, compression testing |
| FAA-H-8083-1B, Aircraft Weight and Balance Handbook + MOSAIC addendum | 2016; addendum Oct 20, 2025 | Weight and balance guide and worked example |
Advisory circulars are guidance, not regulation: "This is a guidance document. Its content is not legally binding in its own right." AC 65-32B, cover Handbooks and ACs are available from the FAA at faa.gov/regulations_policies.
Found an error? This is a study aid built by people, checked against the sources above, and it can still be wrong. Always confirm against the current eCFR and the aircraft manufacturer's data before acting.