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The IA Test and 14 CFR Parts 43, 65 and 91 in Drawings The Paperwork in Four Steps

Annual and 100-hour inspections, major vs. minor, approved vs. acceptable data, Form 337 block by block, ADs, logbook entries and weight and balance. Every topic gets its own page: the drawing first, then what you need to remember. 68 illustrated pages.

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Every topic, its own pageEach regulation drawn, with the explanation and the 14 CFR reference beside it
68 illustrated pages9 parts, from what an IA signs to the regulation map
Up-to-date sourceseCFR 14 CFR Parts 39, 43, 65 and 91, AC 43-9C and AC 43.13-1B
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Look Inside the Book

Every page has one big drawing and a box with the rules and regulation numbers you need to know:

65.95(a): annuals, progressive inspections and return to service after major repairs and alterations.
65.95(a): annuals, progressive inspections and return to service after major repairs and alterations.
Airworthy = conforms to type design + in condition for safe operation. Both, always.
Airworthy = conforms to type design + in condition for safe operation. Both, always.
43.1: U.S. airworthiness certificate, Part 43 applies; amateur-built experimental gets a condition inspection, not an annual.
43.1: U.S. airworthiness certificate, Part 43 applies; amateur-built experimental gets a condition inspection, not an annual.
Major or minor → which data → 337 or logbook → who signs.
Major or minor → which data → 337 or logbook → who signs.
Minor = logbook (43.9) · Major = 337 + logbook · Repair station major repair = work order (App. B(b))
Minor = logbook (43.9) · Major = 337 + logbook · Repair station major repair = work order (App. B(b))
Annual every 12 calendar months by an IA; 100-hour for hire, and an A&P can sign it.
Annual every 12 calendar months by an IA; 100-hour for hire, and an A&P can sign it.
Part 39: ADs are enforceable, still apply after alterations, and override service documents.
Part 39: ADs are enforceable, still apply after alterations, and override service documents.
43.9(a): work, date, who did it, signature, certificate number, kind of certificate.
43.9(a): work, date, who did it, signature, certificate number, kind of certificate.

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These are real pages from the book. The table of contents is the full one: 9 parts and 64 topics.

The Problem Isn't You. It's How It Was Explained to You.

A customer rolls an amateur-built experimental into the hangar and asks you for its annual. You stop for a second: does Part 43 even apply to this airplane?

You've read 43.1, but the manual hands it to you as a paragraph of exceptions inside exceptions. The rule gets lost in the sentence, and by the next night it's gone again.

43.1: U.S. airworthiness certificate, Part 43 applies; amateur-built experimental gets a condition inspection, not an annual.

In the book, 43.1 is one page: any U.S. airworthiness certificate except experimental on one side, Part 43 applies; amateur-built experimental on the other, condition inspection, not an annual. You see the split before you read a word.

Same with major vs. minor, approved vs. acceptable data, Form 337 block by block, ADs and the 43.9 entry: each one has its own page.

So when the question comes up, on the test or at the bench, you know where it falls and you answer it without opening the regs again.

COMPARE FOR YOURSELF

The Same Topic, Two Ways to Study It

THIS
  • The manual: line after line
  • Airworthiness explained in words only
  • You walk into the test with doubts
For an aircraft to be considered airworthy, two conditions must be satisfied concurrently. First, the aircraft must conform to its type design, as reflected in the type certificate data sheet, applicable supplemental type certificates and any properly approved major repairs or alterations. Second, the aircraft must be in a condition for safe operation with respect to wear, deterioration, corrosion and the absence of defects. Failure to satisfy either condition renders the aircraft unairworthy, irrespective of its compliance with the other requirement.
FOR THIS
  • Airworthiness in one drawing
  • The two conditions in a box
  • You see it and you get it
Airworthy = conforms to type design + in condition for safe operation. Both, always.
CONTENTS

Take a Look at the 9 Parts and 64 Topics

The IA itself, airworthiness and its papers, Part 43, major or minor and which data, Form 337, inspections, ADs and records, logbook entries and weight and balance, and a final review: 68 pages, all illustrated.

IThe IA: What It Is and How You Keep It · pp. 5-10
  1. What an IA Signs That an A&P Can't
  2. Eligibility: The 65.91 Checklist
  3. From Test to Card: Applying at the FSDO
  4. When Your IA Expires
  5. Renewal: Pick One Activity Per Year
  6. Moving Your Fixed Base
IIAirworthiness and the Papers Behind the Airplane · pp. 11-17
  1. Airworthy Means Two Things
  2. Reading a TCDS in One Pass
  3. STCs: Changing the Type Design
  4. Airworthiness Limitations and ICA
  5. Documents On Board: AROW
  6. Required vs. Inoperative Equipment
  7. The Owner's Part: 91.403, 405 and 407
IIIPart 43: Who Does What · pp. 18-23
  1. Where Part 43 Applies and Where It Doesn't
  2. Overhauled vs. Rebuilt
  3. Who May Perform Maintenance
  4. Preventive Maintenance: The Appendix A List
  5. Who May Approve for Return to Service
  6. The 43.13 Performance Rule
IVSteps 1 and 2: Major or Minor? Which Data? · pp. 24-32
  1. The 4-Step Path
  2. The Definition of Major (14 CFR Part 1)
  3. Airframe Major Repairs
  4. Airframe Major Alterations
  5. Powerplant, Propeller and Appliance: Major
  6. The Gray Zone: When the List Doesn't Name It
  7. Approved Data vs. Acceptable Data
  8. When AC 43.13-1B Counts as Approved Data
  9. Field Approvals
VStep 3: Form 337 Block by Block · pp. 33-40
  1. 337 or Logbook Only?
  2. Blocks 1 and 2: Aircraft and Owner
  3. Block 3: For FAA Use Only
  4. Block 4: Unit Identification
  5. Blocks 5 and 6: Type and Conformity
  6. Block 7: Approval for Return to Service
  7. Block 8: Description of Work
  8. Where the 337 Goes: 48 Hours
VIInspections: Annual, 100-Hour, Progressive · pp. 41-49
  1. Annual vs. 100-Hour
  2. The 10-Hour Allowance
  3. Counting Calendar Months
  4. Progressive Inspection
  5. Appendix D: Scope and Detail
  6. The Engine Runup Before You Sign
  7. Life-Limited Parts and Limitations at the Annual
  8. When the Annual Finds Problems
  9. The Other Calendars: Static, Transponder, ELT
VIIADs and Maintenance Records · pp. 50-56
  1. What an AD Is
  2. The Three Kinds of AD
  3. Does This AD Apply?
  4. Recurring, One-Time, Terminating, AMOC
  5. The AD Status Record
  6. 91.417: What You Keep and for How Long
  7. Transfer and Falsification
VIIIStep 4: Logbook Entries and Return to Service · pp. 57-63
  1. The 43.9 Maintenance Entry
  2. The 43.11 Annual Entry: Airworthy
  3. The Annual Entry: Not Airworthy
  4. The Logbook Entry for a Major Repair or Alteration
  5. The AD Compliance Entry
  6. Weight and Balance: Arm, Moment, CG
  7. Weight and Balance After an Alteration
IXReview and Frequent Mistakes · pp. 64-68
  1. The 4-Step Path on One Page
  2. The Numbers to Know Cold
  3. Frequent Logbook Mistakes
  4. Frequent Form 337 Mistakes
  5. Where to Find It: The Regulation Map

One Page, One Topic, All Clear

Think of it this way:

You've just finished a repair on a customer's single-engine airplane. The owner wants it back tomorrow, and you have to make the call: major or minor, Form 337 or logbook only?

You open the book to the 4-step path and the four boxes are drawn in order: major or minor, which data backs it, 337 or logbook, who signs and what they write.

Minor = logbook (43.9) · Major = 337 + logbook · Repair station major repair = work order (App. B(b))

The same with annual vs. 100-hour, the 10-hour allowance, whether an AD applies, Block 8 of the 337 and the annual entry for an airplane that isn't airworthy: each one on its own page.

Inspection Authorization Illustrated is 9 parts and 64 topics, all drawn, and it ends with the numbers to know cold, the frequent logbook and 337 mistakes and a regulation map.

What you see drawn, you don't have to memorize.

What's Inside Inspection Authorization Illustrated:

Ipp. 5-10

The IA: What It Is and How You Keep It

Know exactly what the IA lets you sign that your A&P doesn't, check yourself against the 65.91 eligibility list, apply at the FSDO and keep it current: expiration, renewal activities and moving your fixed base.

IIpp. 11-17

Airworthiness and the Papers Behind the Airplane

Airworthy in its two conditions, reading a TCDS, STCs, airworthiness limitations and ICA, AROW, required vs. inoperative equipment and the owner's duties under 91.403, 405 and 407.

IIIpp. 18-23

Part 43: Who Does What

Where Part 43 applies, overhauled vs. rebuilt, who may perform maintenance, the Appendix A preventive list, who approves for return to service and the 43.13 performance rule.

IVpp. 24-32

Steps 1 and 2: Major or Minor? Which Data?

Make the major-or-minor call with the 4-step path: the Part 1 definition, the Appendix A lists, the gray zone, approved vs. acceptable data, when AC 43.13-1B counts as approved and when you need a field approval.

Vpp. 33-40

Step 3: Form 337 Block by Block

Decide 337 or logbook only at a glance, fill in the form block by block, from aircraft and owner to the description of work, and know where each copy goes within 48 hours.

VIpp. 41-49

Inspections: Annual, 100-Hour, Progressive

Annual vs. 100-hour, the 10-hour allowance, counting calendar months, progressive inspection, Appendix D, the runup, life-limited parts, discrepancies and the static, transponder and ELT calendars.

VIIpp. 50-56

ADs and Maintenance Records

What an AD is, the three kinds, whether it applies, recurring, one-time, terminating and AMOC, the AD status record, 91.417 record keeping, transfer and falsification.

VIIIpp. 57-63

Step 4: Logbook Entries and Return to Service

The 43.9 entry, the 43.11 annual entry airworthy and not airworthy, the major repair and alteration entry, the AD compliance entry and weight and balance before and after an alteration.

IXpp. 64-68

Review and Frequent Mistakes

The 4-step path on one page, the numbers to know cold, frequent logbook and Form 337 mistakes and a map of where each rule lives.

At the end of the book: The 4-step path on one page, the numbers to know cold, frequent logbook and Form 337 mistakes and a regulation map.

Plus: 2 Free Books

IA Exam-Style Practice Questions

BONUS 1: «IA Exam-Style Practice Questions»

Value on its own: US$ 17.90

Practice with exam-style questions on Parts 43, 65 and 91, and every answer points you back to the page and the regulation behind it.

Logbook & Form 337 Mistakes: Before and After

BONUS 2: «Logbook & Form 337 Mistakes: Before and After»

Value on its own: US$ 14.90

See the most frequent logbook-entry and Form 337 mistakes side by side with the corrected version, so you review the paperwork in minutes.

Inspection Authorization Illustrated with 2 Free Books

  • Inspection Authorization Illustrated: 68 illustrated pagesUS$ 63
  • BONUS 1: IA Exam-Style Practice QuestionsUS$ 17.90
  • BONUS 2: Logbook & Form 337 Mistakes: Before and AfterUS$ 14.90
  • High-resolution PDF to printIncluded
Total value US$ 95.80
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Who This Book Is For

You're starting to study for the IA

You're starting to study for the IA

Parts 43, 65 and 91 laid out in one fixed path, so each regulation lands in its place instead of piling up as loose paragraphs.

Your IA test date is set

Your IA test date is set

Review the whole book at a glance in the last weeks: one drawing per topic, the numbers in a box and the practice questions pointing back to each page.

You already sign annuals

You already sign annuals

A printed copy at the bench to check a 337 block, the wording of a not-airworthy annual entry or whether an AD still applies.

Everything You Get Today

US$ 95.80US$ 27
YES, I WANT INSPECTION AUTHORIZATION ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.

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Frequently Asked Questions

Is it for me if I've been an A&P for 20 years?

Yes. It doesn't teach you the airplane, you know that already. It draws the regulatory side of the IA: inspections, major vs. minor, data, Form 337, ADs and logbook entries.

Where does the content come from?

From 14 CFR Parts 39, 43, 65 and 91 as published on the eCFR when the book was written, plus AC 43-9C, AC 43.13-1B and the FAA Aircraft Weight and Balance Handbook. Every page prints the exact section it's based on, so you can check it against today's eCFR in seconds.

Is this official FAA material?

No. It's independent study material, not affiliated with or endorsed by the FAA. It doesn't issue a certificate and it isn't FAA-accepted IA refresher training for your renewal.

I already have the regs and a prep course. What does this add?

The regs give you the text and the course gives you the hours. This book puts every topic on one drawn page, in the same 4-step order, with the 14 CFR section printed beside it, so you can review the night after your shift and keep a printed copy at the bench. It doesn't replace your course, the current regulations, manufacturers' manuals or an IA's judgment.

Are the practice questions the ones on the test?

No. They're written for this book in the style of the exam, and every answer points to the page and the regulation behind it.

When and how do I get it?

The book and the 2 bonus books arrive as a PDF by email, to the address you enter at checkout.

Do I have to pay every month?

No. It's a one-time payment.

Can I have it on paper?

Yes. The PDF is printable: print it at home or at a print shop and keep it at your bench.

How does the refund work?

You have 30 days. We refund everything if the file won't open, if the book isn't what you see on this page, if you were charged twice or if the email doesn't arrive: just email us.

Before You Close This Page

No more rereading Part 43 with nothing sticking.

You see Form 337 drawn block by block, and that's it.

You walk into the test knowing where everything is.

Drawings make studying faster.

The book is right below.

One-time payment: US$ 27 · Guarantee: 30 days · PDF by email

YES, I WANT INSPECTION AUTHORIZATION ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.