AGI Exam Domains 2026: Complete Guide to All 16 Content Areas

AGI Exam Structure at a Glance

The Advanced Ground Instructor knowledge test is administered by PSI on behalf of the FAA, and its content is organized into 16 distinct domains rather than a loose pool of trivia. Each candidate answers 100 scored multiple-choice questions, with the possibility of additional unscored questions used for future test validation - you won't know which is which, so every question deserves full attention. You have 2 hours and 30 minutes to finish, and a 70% score is required to pass.

The test fee is $175 plus applicable tax, and unlike many other FAA certificates, no instructor endorsement is required before your first attempt. Applicants can sit for the exam at age 16, though the certificate itself isn't issued until age 18, and English proficiency plus a passing Fundamentals of Instructing test are also required unless an exemption applies. For a full breakdown of eligibility rules, see our AGI Requirements guide, and for the full fee picture, check AGI Certification Cost breakdown.

Where the 16 Domains Actually Come From

A detail that surprises a lot of candidates: the AGI domain list isn't a custom FAA invention. It's a direct reproduction of the commercial pilot knowledge areas found in 14 CFR 61.125(b). The logic makes sense once you think about it - an Advanced Ground Instructor's core job is to teach and endorse students up through commercial-level ground knowledge, so the test verifies you actually know that material yourself, not just how to teach.

On top of the 61.125(b) list, the AGI test also pulls from knowledge areas referenced in 14 CFR 61.97 (instrument ground school knowledge, though instrument subjects are excluded from AGI privileges), 61.105 (private pilot knowledge), 61.155 (airline transport pilot knowledge), and 61.309 (ground instructor knowledge areas themselves). That's a wide net, which is why AGI is often described as broader - if not deeper - than the Basic Ground Instructor (BGI) certificate. If you're weighing how demanding this really is compared to other instructor paths, our How Hard Is the AGI Exam guide digs into that comparison in detail.

Domains 1-8: Regulations, Weather, and Aircraft Performance

The first eight domains lean heavily toward regulatory knowledge, aerodynamics, and the numbers-based skills every commercial-level pilot needs. Here's what each one actually demands from a test-taker.

Domain 4 (Meteorology) tests recognition of critical weather situations, windshear identification and avoidance, and interpretation of aeronautical weather reports and forecasts - METARs, TAFs, and winds aloft data included. Domain 5 (Safe and Efficient Aircraft Operation) is broader and touches checklist discipline, collision avoidance, and general operational judgment.

Domain 6 (Weight and Balance) and Domain 7 (Performance Charts) are computation-heavy and reward practice with real chart excerpts rather than memorized formulas alone. Domain 8 (Exceeding Performance Limitations) asks you to explain the consequences - reduced climb performance, structural stress, control loss - of operating outside published limits.

Domains 9-16: Navigation, Systems, and Special Operations

The second half of the domain list shifts toward navigation, systems knowledge, decision-making, and a handful of specialized operational categories.

Domain 11 (Aeronautical Decision Making and Judgment) tests scenario-based ADM concepts rather than rote facts - think risk assessment models and hazardous attitudes. Domain 12 (Aircraft Systems) covers powerplants, electrical, fuel, and hydraulic systems at a conceptual level appropriate for ground instruction. Domain 13 (Maneuvers, Procedures, and Emergency Operations) asks you to describe correct technique and reasoning, even though you'll never demonstrate it in an aircraft as part of this certificate.

Domain 14 (Night and High-Altitude Operations) includes physiological factors like hypoxia and night vision adaptation alongside operational procedures. Domain 15 (National Airspace System Procedures) covers airspace classes, clearances, and communication requirements. And Domain 16 (Lighter-Than-Air Training Procedures) is the domain most candidates underestimate - it covers ground and flight training procedures specific to balloon and airship ratings, a category most fixed-wing-focused candidates have never studied.

How the Domains Show Up in Test Questions

The FAA doesn't label questions by domain number on the actual test - you won't see "Domain 6" printed above a weight and balance problem. Instead, questions are woven together, so a single test session might jump from a regulatory scenario to a compass heading calculation to a weather interpretation question in rapid succession. This mixed format is one reason candidates who study domain-by-domain in isolation sometimes struggle on test day; the real exam demands quick context-switching.

Most questions are scenario-based rather than pure definition recall. Rather than asking "What is load factor?" a question is more likely to describe a specific bank angle and airspeed situation and ask you to identify the resulting stall speed increase. That style rewards understanding over memorization, particularly in Domains 3, 6, 7, and 11.

For a deeper look at exactly how the FAA calculates your score and what 70% translates to in raw question counts, see our AGI Passing Score guide. And if you want a condensed reference you can review right before test day, the AGI Cheat Sheet compresses the highest-yield facts from all 16 domains onto one page.

Mapping the Domains to a Study Timeline

Rather than studying alphabetically or in numerical order, it helps to group domains by cognitive type and sequence them so foundational concepts come before the domains that depend on them. Aerodynamics (Domain 3) underpins performance (Domains 7-8), so it belongs early. Lighter-than-air content (Domain 16) is self-contained and can be tackled anytime without prerequisite knowledge.

For a more detailed week-by-week breakdown with recommended resources and review cycles, our AGI Study Guide walks through the full preparation process from day one to test day.

Which Domains Deserve the Most Attention

Not every domain carries equal risk of a wrong answer. Based on how the domains are structured relative to 61.125(b), some areas involve dense computation or unfamiliar territory that deserves extra repetition.

If you want data-backed context on how these risk areas translate into overall outcomes, our AGI Pass Rate analysis reviews FAA statistics and what they suggest about which domains cause the most missed points.

Who Actually Uses These 16 Domains

Because AGI privileges cover Part 61 ground training and knowledge-test recommendations for nearly every rating except instrument subjects, the certificate holder's day-to-day work touches most of these domains repeatedly. Flight schools use AGI-certificated instructors to teach ground school for private, commercial, and instructor candidates, while some aviation employers value the credential as evidence of broad regulatory and technical knowledge even outside a classroom setting.

Since the certificate never expires - though exercising its privileges requires qualifying instructional activity, an approved refresher course, or a proficiency endorsement within the preceding 12 calendar months - many holders use it as a long-term teaching credential alongside other certificates. If you're evaluating whether the investment makes sense for your career path, our ROI analysis and AGI Salary Guide break down the practical earning and job-market considerations, and AGI Jobs covers where these roles typically show up.

Whatever your goal, testing your recall against realistic scenario-based questions across all 16 domains before scheduling your official date is the most direct way to gauge readiness - you can run through full-length practice sessions modeled on the real exam at AGI Exam Prep's practice test platform.

Frequently Asked Questions