Not affiliated with the FAA. Original questions based on the current text of 14 CFR Parts 39, 43, 65 and 91 on eCFR (current as of 2026-10-26), FAA Advisory Circular 43.13-1B (Change 1) and the FAA Aviation Maintenance Technician Handbook – General (FAA-H-8083-30B).
FAA Inspection Authorization (IAR) knowledge test: practice test with original questions
Practice for the FAA Inspection Authorization (IAR) knowledge test with 71 original questions written from the current 14 CFR Parts 39, 43, 65 and 91, AC 43.13-1B and the FAA AMT handbook. Mock tests follow the published rule: 50 questions, 35 correct to pass.
The FAA Inspection Authorization (IAR) knowledge test has 50 questions, and you pass with 35 correct answers. These 71 practice questions were written from AC 43.13-1B, Acceptable Methods, Techniques, and Practices: Aircraft Inspection and Repair (with Change 1) (1998, Change 1) and checked against it on Oct 28, 2026.
71 questions · Modes: Study, Topic drill, Mock exam, Daily 5
Mock exam: 50 questions, pass at 35
About this test
Practice for the FAA Inspection Authorization (IAR) knowledge test with original questions written from the current text of 14 CFR Parts 39, 43, 65 and 91 on eCFR (current as of 2026-10-26), FAA Advisory Circular 43.13-1B (Change 1) and the FAA Aviation Maintenance Technician Handbook – General (FAA-H-8083-30B). Every correct answer is backed by a passage of the source and checked by two independent verifiers.
- Study: every question with a short explanation.
- Topic drills: inspection authorization privileges and limits, maintenance, alterations and records, airworthiness directives and inspections, acceptable methods and practices.
- Mock test: 50 questions, 35 correct (70%) to pass, as the FAA Airman Knowledge Testing Matrix (revised 9/25/26) states for test IAR.
The questions are written in our own words; this is not the FAA’s question bank. Chart, figure and computer questions that need images are not included.
Topics
- Active maintenance experience · 1
- AD definition · 1
- AD publication · 1
- AD versus service document · 1
- Airframe major alterations · 1
- Airworthy inspection statement · 1
- Alternative method approval · 1
- Altimeter system test interval · 1
- Annual versus 100-hour · 1
- Application · 1
- Bolt material limits · 1
- Cabin and cockpit group inspection · 1
- Changing fixed base · 1
- Control cable inspection · 1
- Cotter pin reuse · 1
- Discrepancy list · 1
- Drilled head bolts · 1
- Entitlement · 1
- Expiration date · 1
- Final torque · 1
- Form 337 on board · 1
- Form for major repairs · 1
- Hardware traceability · 1
- IA ratings and certificate time · 1
- Inspection checklist · 1
- Life-limited part definition · 1
- Locking bolts and reuse · 1
- Lock washers · 1
- Loss of effectiveness · 1
- Marking exhaust parts · 1
- Missed first-year activity · 1
- Modified products · 1
- Nylon-jacketed cable · 1
- Office for AMOC information · 1
- Operating after maintenance · 1
- Operating without AD compliance · 1
- Owner inspection duty · 1
- Pilot preventive maintenance approval · 1
- Preparation for annual · 1
- Progressive inspection supervision · 1
- Propeller group inspection · 1
- Record retention · 1
- Relief for expired IA · 1
- Renewal evidence · 1
- Repairman and return to service · 1
- Repeat violations · 1
- Resuming privileges · 1
- Returning a suspended IA · 1
- Return-to-service entry prerequisite · 1
- Return to service privilege · 1
- Routine versus detailed inspection · 1
- Safety wire ends · 1
- Safety wire on emergency equipment · 1
- Safety wire size · 1
- Safety wire tension · 1
- Self-locking nut service life · 1
- Short-held authorization · 1
- Thread protrusion · 1
- Tire removal criteria · 1
- Torque effects · 1
- Torque wrench calibration · 1
- Transfer of life-limited parts · 1
- Turbine engine run · 1
- Useful load · 1
- Washers for grip length · 1
- Welding fuel tanks · 1
- What an AD requires · 1
- Wheel bearing nut · 1
- When ADs are issued · 1
- Who may approve return to service · 1
- Wing assembly inspection · 1
Sources and version
- AC 43.13-1B, Acceptable Methods, Techniques, and Practices: Aircraft Inspection and Repair (with Change 1)Covers: 1998, Change 1
- 14 CFR Part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration (eCFR, current as of 2026-10-26)Covers: eCFR current as of 2026-10-26
- 14 CFR Part 65, Certification: Airmen Other Than Flight Crewmembers (eCFR, current as of 2026-10-26)Covers: eCFR current as of 2026-10-26
- 14 CFR Part 39, Airworthiness Directives (eCFR, current as of 2026-10-26)Covers: eCFR current as of 2026-10-26
- 14 CFR Part 91, General Operating and Flight Rules (eCFR, current as of 2026-10-26)Covers: eCFR current as of 2026-10-26
- Aviation Maintenance Technician Handbook – General (FAA-H-8083-30B)Covers: 2023
Covers: 14 CFR Parts 39, 43, 65 and 91 as of 2026-10-26; AC 43.13-1B Change 1; AMT Handbook FAA-H-8083-30B · Verified current as of Oct 28, 2026
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How this page was made
Built from the sources listed above and reviewed before it was published. Where the source licence allows it the questions keep the source wording; otherwise they are original questions based on the source. Every answer shows its source. This is not legal, immigration, medical or financial advice.