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Start learningBegin with Chapter 1 — the properties of metals and the steels aircraft use.
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Mock examThe real B1 paper: 80 questions in 100 minutes, weighted by sub-module — or a 40-question half paper.
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Key facts cheat sheetEvery code, limit, identification mark and definition from the course on one searchable page.
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Free reference libraryFAA handbooks opened at the right page, AC 43.13-1B and the Part-66 / CAR-66 syllabus.
Chapters
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CHAPTER 1 · Syllabus 6.1 (a) · level 2
Properties of Metals and Aircraft Steels
The properties every engineer must be able to define, then the ferrous metals used on aircraft: carbon and alloy steels, the SAE/AISI numbering system, stainless steels, and how heat treatment — hardening, tempering, annealing, normalising and case hardening — changes them.
🎬 8 slides📖 ~35 min🃏 22✅ 22 Q
Not startedCHAPTER 2 · Syllabus 6.1 (b) (c) · level 2
Testing, Inspecting and Repairing Steel Parts
How the properties of steel are measured — tensile, hardness (Brinell, Rockwell, Vickers), impact and fatigue tests — how steel parts are inspected with magnetic particle and other non-destructive methods, and the rules for repairing, welding, plating and protecting them.
🎬 7 slides📖 ~30 min🃏 18✅ 20 Q
Not startedCHAPTER 3 · Syllabus 6.2 (a) · level 2
Aluminium Alloys
The metal of the airframe: the four-digit alloy series, the common aircraft alloys (2024, 7075, 6061, 5052, 2117), temper designations (O, H, T3, T4, T6, T7…), Alclad, and how heat-treatable alloys are solution heat-treated, quenched and aged — including 'icebox' rivets.
🎬 6 slides📖 ~35 min🃏 21✅ 22 Q
Not startedCHAPTER 4 · Syllabus 6.2 (a) (b) (c) · level 2
Magnesium, Titanium, Copper and Nickel — Testing and Repair
The other non-ferrous metals — magnesium, titanium, copper alloys, Monel and Inconel — their characteristics and hazards, then how non-ferrous parts are tested (hardness, conductivity, NDT) and the inspection and repair procedures used on aluminium structure.
🎬 7 slides📖 ~30 min🃏 16✅ 20 Q
Not startedCHAPTER 5 · Syllabus 6.3.1 (a) · level 2
Composites, Plastics, Rubber and Sealants
What a composite is — fibres in a matrix — and the characteristics of glass, aramid and carbon fibres, epoxy and other resins, prepregs, fabric weaves and ply orientation, sandwich construction with honeycomb and foam cores, and the other non-metallics: transparent plastics, rubbers and sealants.
🎬 7 slides📖 ~35 min🃏 16✅ 21 Q
Not startedCHAPTER 6 · Syllabus 6.3.1 (b) (c) · level 2
Composite Damage: Detection and Repair
The defects composites suffer — delamination, disbonds, impact damage, moisture, heat and lightning damage — how they are found (visual, tap test, ultrasonic, thermography, radiography), and how bonded repairs are made: damage removal, scarf and stepped repairs, core replacement, vacuum bagging and controlled curing.
🎬 6 slides📖 ~30 min🃏 15✅ 16 Q
Not startedCHAPTER 7 · Syllabus 6.3.2 · 6.3.3
Wooden Structures and Fabric Covering
The traditional materials still flying on gliders, vintage and light aircraft: aircraft woods and plywood, acceptable and unacceptable defects, glues, inspection and repair of wood structure; then fabric covering — cotton, linen, polyester and glass fabrics, dopes and coating systems, strength testing and repairs.
🎬 7 slides📖 ~35 min🃏 15✅ 20 Q
Not startedCHAPTER 8 · Syllabus 6.4 (a) (b) · levels 1–3
Corrosion
Why metals corrode — the electrochemical cell, anodes and cathodes, the galvanic series — the forms corrosion takes on aircraft (surface, pitting, filiform, intergranular, exfoliation, stress corrosion, fretting, galvanic, concentration cell, microbial), where it is found, what its products look like, and how it is prevented and treated.
🎬 7 slides📖 ~40 min🃏 18✅ 22 Q
Not startedCHAPTER 9 · Syllabus 6.5.1 · 6.5.2 · level 2
Screw Threads, Bolts, Studs, Screws and Nuts
Thread nomenclature, forms and fits and how threads are measured; then aircraft bolts — AN/MS/NAS part numbers, head markings, grip length and installation torque — studs and thread inserts, structural, machine and self-tapping screws, and the families of aircraft nuts.
🎬 7 slides📖 ~40 min🃏 23✅ 25 Q
Not startedCHAPTER 10 · Syllabus 6.5.3 · 6.5.4 · level 2
Locking Devices and Aircraft Rivets
How fasteners are prevented from loosening — tab and spring washers, locking plates, split pins, pal-nuts, lockwire (safety wire) and quick-release fasteners, keys, circlips and cotter pins — then solid and blind rivets: types, alloy codes and head markings, heat treatment, and correct installation and inspection.
🎬 7 slides📖 ~35 min🃏 20✅ 20 Q
Not startedCHAPTER 11 · Syllabus 6.6 · 6.7 · level 2
Pipes, Hoses, Unions and Springs
Rigid and flexible fluid lines — tube materials and sizes, flared and flareless fittings, bending and beading, hose types, sizes and installation, and identification bands — followed by spring types, materials, characteristics and applications.
🎬 7 slides📖 ~35 min🃏 16✅ 16 Q
Not startedCHAPTER 12 · Syllabus 6.8 · 6.9 · level 2
Bearings and Transmissions
Purpose, loads, materials and construction of plain and rolling-element bearings and how they fail; then mechanical transmissions — gear types, ratios and backlash, belts and pulleys, chains and sprockets, screw jacks, levers and push-pull rods.
🎬 7 slides📖 ~35 min🃏 19✅ 21 Q
Not startedCHAPTER 13 · Syllabus 6.10 · level 2
Control Cables and Fittings
Flexible control cable construction and materials, end fittings and swaging, turnbuckles and their safetying, pulleys, fairleads and guards, cable tension and temperature compensation, Bowden and push-pull flexible controls, and how cables are inspected.
🎬 7 slides📖 ~30 min🃏 16✅ 14 Q
Not startedCHAPTER 14 · Syllabus 6.11 · level 2
Electrical Cables and Connectors
Aircraft wire types, construction, sizes and insulation; shielded, coaxial and high-temperature cables; wire identification; crimped terminals and splices; plugs, sockets and connector families; and the installation and protection rules for wire bundles.
🎬 7 slides📖 ~35 min🃏 19✅ 20 Q
How the syllabus maps to this course
| Syllabus | Sub-module | B1 level | B1 Qs | Chapter |
|---|---|---|---|---|
| 6.1 | Ferrous materials | 2 | 7 | 1, 2 |
| 6.2 | Non-ferrous materials | 2 | 9 | 3, 4 |
| 6.3.1 | Composites and non-metallics | 2 | 10 | 5, 6 |
| 6.3.2 | Wooden structures | 1 | 4 | 7 |
| 6.3.3 | Fabric covering | 1 | 4 | 7 |
| 6.4 | Corrosion | 1–3 | 8 | 8 |
| 6.5.1 | Screw threads | 2 | 4 | 9 |
| 6.5.2 | Bolts, studs and screws | 2 | 6 | 9 |
| 6.5.3 | Locking devices | 2 | 2 | 10 |
| 6.5.4 | Aircraft rivets | 2 | 3 | 10 |
| 6.6 | Pipes and unions | 2 | 3 | 11 |
| 6.7 | Springs | 2 | 1 | 11 |
| 6.8 | Bearings | 2 | 4 | 12 |
| 6.9 | Transmissions | 2 | 4 | 12 |
| 6.10 | Control cables | 2 | 5 | 13 |
| 6.11 | Electrical cables and connectors | 2 | 6 | 14 |
| Total | 80 |
The Module 6 paper
Category B1 (and B3): 80 multiple-choice questions in 100 minutes. Categories B2 and B2L: 60 questions in 75 minutes. Category A: 52 questions in 65 minutes. That is a nominal 75 seconds per question, pass mark 75%, no negative marking. The per-sub-module numbers in the table are the recommended distribution in the AMC to Part-66 / CAR-66 Appendix II.
B1 depth
B1 needs level 2 for most of Module 6 — materials, fasteners, pipes, springs, bearings, transmissions and cables — with level 1 for wooden structures and fabric covering and up to level 3 for the types of corrosion. Expect identification questions: alloy numbers, temper codes, AN/MS part numbers, thread forms, rivet head markings and cable construction.
How to use this course
1) Watch the chapter explainer for the big picture. 2) Read the lesson and study every diagram — Module 6 is full of codes and identification marks. 3) Walk the mind map and flip the flashcards the next day. 4) Take the chapter quiz until you score 75% or more. 5) When every chapter is green, sit the timed mock exam and review every wrong answer.