- An AGI is an FAA ground instructor rating that can teach and sign off commercial pilot knowledge topics.
- The knowledge test costs $175 plus tax, has 100 scored questions, and allows 2 hours 30 minutes.
- Passing requires 70%, and FAA 2025 data shows a 97.29% pass rate across 2,694 tests.
- No pilot certificate, medical, or flight experience is required - applicants can test at age 16.
What Is an AGI, Exactly?
An Advanced Ground Instructor, or AGI, is an FAA certificate holder authorized to provide ground instruction and endorse students for FAA knowledge tests covering commercial pilot subject matter. Unlike a Basic Ground Instructor (BGI), whose privileges stop at private pilot and recreational pilot ground topics, the AGI rating extends into commercial-level material - aerodynamics, performance charts, weight and balance, and more. If you've landed here searching "what is a AGI," the short answer is that it's a non-flying instructor credential built entirely around ground knowledge, not stick-and-rudder skills.
This distinguishes AGI from a Certificated Flight Instructor (CFI). A CFI must hold a pilot certificate, pass a practical test in an aircraft, and demonstrate flight proficiency. An AGI does none of that. There's no pilot certificate requirement, no medical certificate, no logged flight hours, and no practical (checkride) test. The entire credential is earned through a single computer-based knowledge exam administered by PSI on behalf of the FAA.
How the AGI Certificate Actually Works
Eligibility to sit for the AGI knowledge test is intentionally low-barrier. Applicants may test at age 16, and no instructor endorsement is required for an initial attempt - you can walk in and take the exam without anyone signing you off first. Certificate issuance, however, has a few more conditions layered on top of the exam itself:
- You must be at least 18 years old to actually hold the issued certificate.
- You must demonstrate English proficiency.
- You must pass the Fundamentals of Instructing (FOI) knowledge test, unless an exemption applies (common for certain teaching-credentialed applicants).
Notice what's absent from that list: no pilot certificate, no medical certificate, no flight experience, and no practical test. This is one of the more misunderstood parts of the rating, and it's covered in more granular detail in AGI Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
The AGI certificate itself does not expire once issued. But you can't just earn it and coast forever - exercising its privileges requires either qualifying instructional activity, completion of an approved refresher course, or a proficiency endorsement within the preceding 12 calendar months.
Exam Format, Fee, and Registration
The AGI knowledge test is administered through PSI testing centers under FAA authorization. Here's what the mechanics look like in practice:
| Exam Detail | Specification |
|---|---|
| Test fee | $175 plus applicable tax |
| Scored questions | 100 multiple-choice |
| Additional questions | May include unscored validation questions |
| Time allowed | 2 hours 30 minutes |
| Passing score | 70% |
| 2025 pass rate | 97.29% across 2,694 tests (FAA data) |
| Minimum test age | 16 |
| Prerequisite endorsement | None required for initial attempt |
All questions are multiple-choice with three answer options, drawn from an FAA-published knowledge bank rather than freeform essay content. That format rewards candidates who recognize patterns in FAA phrasing as much as candidates who deeply understand aerodynamics - which is exactly why generic study advice tends to fall short here. For a full walkthrough of exam mechanics and fee logistics, see AGI Certification Cost 2026: Complete Pricing Breakdown and AGI Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
The 16 AGI Knowledge Domains
The AGI test isn't a random grab bag of aviation trivia. It mirrors the commercial pilot knowledge areas defined in 14 CFR 61.125(b), plus supplementary material referenced in 61.97, 61.105, 61.155, and 61.309. That means every question you see on test day traces back to one of sixteen defined domains:
Domain 1: Applicable Federal Aviation Regulations
Regulations tied to commercial pilot privileges, limitations, and flight operations under this chapter.
- Focus on the specific limitations that separate commercial privileges from private ones
Domain 2: NTSB Accident Reporting Requirements
When and how accidents and incidents must be reported to the National Transportation Safety Board.
- Memorize reportable-event thresholds and reporting timeframes
Domain 3: Basic Aerodynamics and Principles of Flight
Lift, drag, stability, and the forces acting on an aircraft in various flight regimes.
- Expect scenario-based questions, not just definitions
Domain 4: Meteorology
Recognition of critical weather situations, windshear recognition and avoidance, and interpreting aeronautical weather reports and forecasts.
- Practice reading METARs, TAFs, and winds-aloft forecasts
Domain 5: Safe and Efficient Aircraft Operation
General operational judgment and procedure across phases of flight.
Domain 6: Weight and Balance Computations
Calculating loading, CG limits, and how weight distribution affects performance.
- Practice math-based problems, not just conceptual recall
Domain 7: Use of Performance Charts
Reading takeoff, landing, climb, and cruise performance data from charts and tables.
Domain 8: Effects of Exceeding Performance Limitations
Consequences of operating outside published aircraft performance envelopes.
Domain 9: Aeronautical Charts and Magnetic Compass Navigation
Pilotage and dead reckoning techniques using charts and compass heading corrections.
Domain 10: Air Navigation Facilities
Ground-based and satellite navigation aids and how to use them operationally.
Domain 11: Aeronautical Decision Making and Judgment
ADM frameworks for evaluating risk and making sound in-flight decisions.
Domain 12: Principles and Functions of Aircraft Systems
How major aircraft systems work and interact - electrical, fuel, hydraulic, and more.
Domain 13: Maneuvers, Procedures, and Emergency Operations
Standard and emergency procedures appropriate to the aircraft type.
Domain 14: Night and High-Altitude Operations
Physiological and procedural considerations unique to night flying and high-altitude environments.
Domain 15: Procedures Within the National Airspace System
Airspace classifications, ATC procedures, and communication requirements.
Domain 16: Lighter-Than-Air Flight and Ground Training
Procedures specific to lighter-than-air rating training, a domain many candidates overlook.
Sixteen domains is a lot of surface area to cover, and no two carry equal weight on test day. A full breakdown of how each domain is tested and weighted is available in AGI Exam Domains 2026: Complete Guide to All 16 Content Areas.
Key Takeaway
Because AGI privileges exclude instrument-rating subjects, you won't be tested on instrument procedures the way a CFII candidate would be - the domains above define the actual ceiling of what's covered.
Who Hires AGIs and Why It Matters
AGI holders show up in a few recurring roles: ground school instructors at Part 61 and Part 141 flight schools, aviation university adjunct instructors, corporate flight department training staff, and independent contractors who run commercial pilot ground courses without ever getting in the airplane themselves. Because no flight time or pilot certificate is required, the rating is also a practical entry point for career-changers moving into aviation education from teaching, engineering, or dispatch backgrounds.
AGI privileges specifically cover Part 61 ground training and knowledge-test recommendations - except for instrument-rating subjects, which fall outside the certificate's scope. That carve-out is worth remembering: if a flight school needs someone to sign off instrument ground training, an AGI alone won't cover it.
If you're weighing whether this credential fits your career plans, AGI Salary Guide 2026: Complete Earnings Analysis and Is the AGI Certification Worth It? Complete ROI Analysis 2026 go deeper on realistic outcomes. There's also a running list of positions actively seeking the rating in AGI Jobs.
AGI vs. Other Ground Instructor Ratings
People often confuse AGI with its sibling ratings, so a quick comparison helps:
| Rating | Covers | Flight Requirement? |
|---|---|---|
| Basic Ground Instructor (BGI) | Private and recreational pilot ground subjects | None |
| Advanced Ground Instructor (AGI) | Commercial pilot ground subjects (16 domains above) | None |
| Instrument Ground Instructor (IGI) | Instrument rating ground subjects | None |
| Certificated Flight Instructor (CFI) | In-aircraft flight training | Pilot certificate + practical test |
Note that AGI subject matter explicitly excludes instrument topics - that's the IGI's territory. Some instructors hold both AGI and IGI to cover the full non-instrument-to-instrument spectrum of ground instruction without ever needing a CFI.
Mapping Domains to a Study Timeline
Because the AGI exam pulls from 16 distinct domains rather than a handful of broad topics, a scattershot review approach tends to leave gaps. A domain-by-domain schedule works better than generic "study every day" advice, since some domains (like weight and balance or performance charts) require computational practice while others (like ADM or regulations) are closer to structured memorization.
Regulatory and Reporting Foundations
- Domain 1: commercial pilot regulations under 61.125(b)
- Domain 2: NTSB reporting thresholds
Aerodynamics, Weather, and Systems
- Domain 3: aerodynamics and flight principles
- Domain 4: meteorology and windshear recognition
- Domain 12: aircraft systems
Performance and Navigation
- Domain 6: weight and balance math
- Domain 7 and 8: performance charts and limitation effects
- Domain 9 and 10: charts, compass work, navigation facilities
Judgment, Procedures, and Final Review
- Domain 11: ADM scenarios
- Domain 13-16: emergency procedures, night/high-altitude ops, airspace, lighter-than-air
- Full-length timed practice under the 2-hour-30-minute limit
For a structured version of this plan with recommended resources per domain, see AGI Study Guide 2026: How to Pass on Your First Attempt. And if you're still assessing whether the material is genuinely tough or just unfamiliar, How Hard Is the AGI Exam? Complete Difficulty Guide 2026 breaks down what actually trips candidates up. You can also run a full domain-based simulation through the practice tests at AGI Exam Prep before booking your PSI appointment.
Frequently Asked Questions
AGI stands for Advanced Ground Instructor, an FAA certificate authorizing ground instruction and knowledge-test endorsements for commercial pilot subject matter, excluding instrument topics. See What Is AGI? and AGI Meaning for related definitions.
No. The AGI certificate requires no pilot certificate, medical certificate, or flight experience - only passing the knowledge test and the Fundamentals of Instructing test (unless exempt).
The PSI test fee is $175 plus applicable tax, covering the 100-question, 2-hour-30-minute exam.
No, the certificate itself does not expire. However, exercising its privileges requires qualifying instructional activity, an approved refresher course, or a proficiency endorsement within the preceding 12 calendar months.
AGI privileges cover Part 61 ground training and knowledge-test recommendations except for instrument-rating subjects, which require an Instrument Ground Instructor (IGI) rating instead.
Understanding what an AGI is and isn't clears up most of the confusion candidates run into before they even start studying. From here, the practical next step is reviewing the domain breakdown, building a study plan around the sixteen content areas, and running practice questions at AGI Exam Prep until the format feels routine rather than intimidating.