Source: FAA-H-8083-31B, landing gear systems chapter. Public domain. Pointers only.
Chapter and section verified against FAA-H-8083-31B, 2023 edition, on 28 August 2026. Page numbers are deliberately not cited: they move between printings, and a citation that rots silently is worse than a coarser one that stays true. Checked by our handbook citation check against our index of the handbook's chapters and sections.
| Elements | The ACS asks for | In the handbook | Where in FAA-H-8083-31B | What it does not give you |
|---|---|---|---|---|
K1, K2, K13 |
Fixed and retractable systems and components; alternative gear (skis, floats) | Types and architecture | Ch. 13 — Fixed & Retractable Landing Gear; Landing Gear Types; Small Aircraft Retraction Systems; Large Aircraft Retraction Systems; Tail Wheel-Type Landing Gear | Alternative gear is knowledge only |
K3, S9, S15, S16 |
Strut servicing and lubrication | Air/oil strut servicing | Ch. 13 — Shock Struts; Shock Strut Operation; Servicing Shock Struts; Bleeding Shock Struts | Why a strut is two springs. AF-E Concepts §3 |
K4, S29 |
Bungee and spring steel gear | Inspection points | Ch. 13 — Bungee Cord | — |
K5, S17, S18, S21, S28 |
Steering systems | Steering and shimmy dampers | Ch. 13 — Nose Wheel Steering Systems; Shimmy Dampers; Non-Hydraulic Shimmy Damper; Steering Damper; Nose Wheel Centering | Shimmy is a resonance. AF-E Concepts §5 |
K6, S22–S26 |
Position and warning systems | Switches, indicators, warning logic | Ch. 13 — Landing Gear Position Indicators; Landing Gear Retraction Test | — |
K7, K9–K12, S7, S8, S12, S13, S27 |
Brake and wheel servicing; wheel, brake and tire construction; tire care; safety; brake actuating systems | Assembly, inspection criteria, wear limits | Ch. 13 — Aircraft Wheels; Wheel Construction; Aircraft Wheel Inspection; Aircraft Brakes; Brake Inspection & Service; Brake Linings; Replacement of Brake Linings; Aircraft Tires & Tubes; Tire Inspection; Tire Mounting; Tire Removal | The wheel hazard. AF-E Concepts §2 |
K8, S2–S4 |
Anti-skid | Components and operation | Ch. 13 — Anti-Skid; Anti-Skid Control Valves; Anti-Skid System Maintenance; Anti-Skid System Tests | Held out of scope — AF-E Concepts §6 |
R1–R6 |
Wheel and tire practices; jacks; high-pressure fluids and gases; fluid handling; strut disassembly; retractable gear around personnel | Safety practice | Ch. 13 — Tire Inspection on the Aircraft; Aircraft Servicing | AF-E Concepts §2 |
The operative sources
- The aircraft maintenance manual for jacking points, strut servicing dimensions and pressures, brake wear limits, torque values and the retraction check procedure.
- The tire manufacturer's data for wear, damage and pressure limits (
S13,S14). - The wheel manufacturer's data for through-bolt torque and inspection criteria.
License
CC BY-SA 4.0 (Licensing).