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Guides, cheat sheets & plan

Who may sign what, which inspection is due, what goes in the logbook, and what MOSAIC changed for light-sport — as tables and diagrams instead of walls of regulation text. Built for the FAA Light-Sport Repairman (maintenance & inspection) course and the A&P mechanic knowledge tests. Every rule cited to 14 CFR or FAA guidance; regulation text checked against the eCFR as of October 4, 2026.

Study guides

Part 43Maintenance, preventive maintenance, rebuilding and alteration. Part 65Mechanic, IA, repairman and light-sport repairman. Part 91 Subpart EOwner responsibilities, inspections, records — plus 91.319 and 91.327. Part 21 & LSAAirworthiness certificates, light-sport category, Part 22. AC 43.13 shop practiceHardware, safety wire, cotter pins, torque, rivets, corrosion, lines, wiring. Weight & balanceDatum, arm, moment, CG shift — with a worked example.

Cheat sheets & plan

Regs cheat sheetOne printable page. Numbers & limitsEvery interval, retention period, torque and size — cited. Study plan15-day LSRM course companion and A&P test logistics.

The tests

Light-Sport Repairman

LSR-M / LSR-I · 14 CFR 65.107, 65.109 · AC 65-32B
18minimum age
16 hinspection-rating course
ACSmaintenance course content

Maintenance rating: an FAA-accepted course covering the Mechanic ACS elements appropriate to the aircraft category, plus a written test given by the course provider. MOSAIC removed the old 120-hour airplane minimum. What changed

Privileges matrix Drill LSRM questions

A&P knowledge tests

AMG · AMA · AMP · FAA-G-ACS-1 companion guide
60General · 2.0 h
100Airframe · 2.0 h
100Powerplant · 2.0 h

70% to pass each test (14 CFR 65.17). All written, oral and practical tests within 24 months (65.71(a)(3)). Retest after 30 days, or sooner with a signed statement of additional instruction (65.19).

Read the guides Drill General questions

How to use this site

1. Start with Who may do what — nearly every regulations question is really "who is allowed to do this, on which aircraft?"

2. Read the Part 43 and Part 65 guides once, then work the questions and flashcards daily.

3. Light-sport students: read MOSAIC before → after early. Anything you learned from pre-2025 material about 1,320 lb, 120-hour courses or safety-directive compliance is out of date.

4. Gate for test day: two consecutive timed sets at 85%+. The pass mark is 70; the margin covers wording you haven't seen.

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Where this comes from: source documents, editions and dates.