AMTStandards.orgAviation maintenance

Quick reference

Terms on this page 10

Dotted in the text; open one for its entry, or see the glossary.

Readings in the sources

8 short readings for GEN-E, a topic at a time: what the test asks, and the sections that cover it. Sign in to tick them off as you read.

  1. Metals, non-metals, tempers, tension, compression, torsion, bending, shear K1–K3, K9

    For the test: Materials and application; heat treatment and metalworking; forces on materials; suitability and compatibility

    • FAA-H-8083-30B Ch. 7: Properties of Metals · Ferrous Aircraft Metals · Nonferrous Aircraft Metals · Nonmetallic Aircraft Materials · Heat-Treatment of Ferrous Metals · Metalworking Processes

  2. Bolts, nuts, screws, pins, washers, turnbuckles, turnlock fasteners, cables and terminals; head markings; wiring technique K4, K5, K11

    For the test: Hardware, including turnlock fasteners, cables, cable fittings and rigid line couplings; safety wire and clip requirements; identification markings

    • FAA-H-8083-30B Ch. 7: Aircraft Hardware · Threaded Fasteners · Aircraft Bolts · Aircraft Nuts · Captive Fasteners · Turn Lock Fasteners · Dzus Fasteners · Camloc Fasteners · Airloc Fasteners · Control Cables & Terminals · Turnbuckles · Safetying Methods · Safety Wiring · General Safety Wiring Rules · Identification & Coding

  3. Micrometers, Vernier scales, dial indicators K6

    For the test: Precision measurement tools and procedures

    • FAA-H-8083-30B Ch. 11: Layout and Measuring Tools · Micrometer Calipers · Reading a Micrometer · Vernier Scale

  4. Torque tables and wrench types K8, K10

    For the test: Torquing tools and procedures; torque and fastener preload

    • FAA-H-8083-30B Ch. 7: Torque · Torque Tables · Fastener Torque
    • FAA-H-8083-30B Ch. 11: Torque Wrench

  5. Weld defects and their appearance K12–K14

    For the test: Acceptable and unacceptable welds; weld repair procedures

    • FAA-H-8083-30B Ch. 10: Inspection of Welds · Visual Inspection

  6. Safety practice R1–R4

    For the test: PPE; improper torque; used hardware and suspected unapproved parts; critical fastener torquing

    • FAA-H-8083-30B Ch. 1: Shop Safety · Physiological Safety
    • FAA-H-8083-30B Ch. 2: Suspected Unapproved Parts (SUP)

  7. Head markings, coding systems, rivet head styles and their codes S4, S11

    For the test: Identify materials and hardware from manufacturer's markings; identify rivets by physical characteristics

    • FAA-H-8083-30B Ch. 7: Identification & Coding for Screws · Hardness Identification · Rivet Identification · Solid Shank Rivets · Head Styles

  8. Alloy designations, substitution rules, hardness testing S10, S12, S13

    For the test: Select the correct aluminum alloy for a structural repair; determine suitability of materials; distinguish heat-treated from non-heat-treated alloys

    • FAA-H-8083-30B Ch. 7: Aluminum Alloys · Wrought Aluminum · Substitution of Aircraft Metals · Standards and Specifications · Hardness Testing · Heat-Treatment of Nonferrous Metals

Source: FAA-H-8083-30B, chapter 7 (materials, hardware and processes) and chapter 11 (hand tools and measuring devices), with chapter 10 for weld inspection, chapter 1 for shop safety and chapter 2 for unapproved parts. Public domain. Pointers only.

Chapter and section verified against FAA-H-8083-30B, 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.

Element The ACS asks for In the handbook Where in FAA-H-8083-30B What it does not give you
K1–K3, K9 Materials and application; heat treatment and metalworking; forces on materials; suitability and compatibility Metals, non-metals, tempers, tension, compression, torsion, bending, shear Ch. 7 — Properties of Metals; Ferrous Aircraft Metals; Nonferrous Aircraft Metals; Nonmetallic Aircraft Materials; Heat-Treatment of Ferrous Metals; Metalworking Processes —
K4, K5, K11 Hardware, including turnlock fasteners, cables, cable fittings and rigid line couplings; safety wire and clip requirements; identification markings Bolts, nuts, screws, pins, washers, turnbuckles, turnlock fasteners, cables and terminals; head markings; wiring technique Ch. 7 — Aircraft Hardware; Threaded Fasteners; Aircraft Bolts; Aircraft Nuts; Captive Fasteners; Turn Lock Fasteners; Dzus Fasteners; Camloc Fasteners; Airloc Fasteners; Control Cables & Terminals; Turnbuckles; Safetying Methods; Safety Wiring; General Safety Wiring Rules; Identification & Coding Why safety wire is directional. GEN-E Concepts §4. Turnlock fasteners — GEN-E Concepts §5. Cables and swaged fittings — the S8 row below and GEN-E Procedures Procedure 6. Rigid line couplings — GEN-D Quick reference, the K1 and K3 rows
K6 Precision measurement tools and procedures Micrometers, Vernier scales, dial indicators Ch. 11 — Layout and Measuring Tools; Micrometer Calipers; Reading a Micrometer; Vernier Scale —
K8, K10 Torquing tools and procedures; torque and fastener preload Torque tables and wrench types Ch. 7 — Torque; Torque Tables; Fastener Torque · Ch. 11 — Torque Wrench What torque is actually doing. GEN-E Concepts §1 — this is the unit's center
K7 Soldering preparation, solder types, flux — Not in this handbook What soldering does to a conductor. AF-K §2
K12–K14 Acceptable and unacceptable welds; weld repair procedures Weld defects and their appearance Ch. 10 — Inspection of Welds; Visual Inspection You will never weld — AF-A §1. You will inspect
R1–R4 PPE; improper torque; used hardware and suspected unapproved parts; critical fastener torquing Safety practice Ch. 1 — Shop Safety; Physiological Safety · Ch. 7 — Torque; Torque Tables · Ch. 2 — Suspected Unapproved Parts (SUP) GEN-E Concepts §1, §3
S3 Inspect and check welds Weld defects and their appearance Ch. 10 — Inspection of Welds; Visual Inspection You will never weld — AF-A §1. You will inspect
S4, S11 Identify materials and hardware from manufacturer's markings; identify rivets by physical characteristics Head markings, coding systems, rivet head styles and their codes Ch. 7 — Identification & Coding; Identification & Coding for Screws; Hardness Identification; Rivet Identification; Solid Shank Rivets; Head Styles An unmarked fastener is not an unknown fastener; it is an unusable one — GEN-E Concepts §3
S8 Identify aircraft control cable components Cable construction, terminals and turnbuckles Ch. 7 — Control Cables & Terminals; Turnbuckles Rigging and tension, which are AF-C
S10, S12, S13 Select the correct aluminum alloy for a structural repair; determine suitability of materials; distinguish heat-treated from non-heat-treated alloys Alloy designations, substitution rules, hardness testing Ch. 7 — Aluminum Alloys; Wrought Aluminum; Substitution of Aircraft Metals; Standards and Specifications; Hardness Testing; Heat-Treatment of Nonferrous Metals Substitution is governed by approved data, not by a table of equivalents. The handbook explains the properties; the SRM decides

The operative sources

  • The maintenance manual's torque table for any actual fastener. The handbook's tables are generic; the aircraft's are approved data (GEN-I).
  • FAA guidance on suspected unapproved parts for R3. A live source, not a handbook topic.
  • The instrument's own calibration standard for S14.

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