- What the Ground Instructor Instrument Exam Actually Is
- Exam Mechanics: Questions, Time, Score, and Fees
- Eligibility, FOI Exemptions, and Endorsement Rules
- The Ten Knowledge Areas and How to Study Each
- IGI vs IRA, FII, and AGI: Different Tests, Different Jobs
- What the FAA Pass-Rate Data Does and Does Not Tell You
- A Six-Week Plan Built Around the Domains
- Test-Day Logistics and Rules
- After You Pass: Permanence vs. Currency
- Frequently Asked Questions
- The IGI knowledge test has 50 questions, a 150-minute limit, and a 70% passing score, per the FAA testing matrix.
- Initial IGI testing needs no instructor endorsement; a retest after failure requires the failed report plus an instructor endorsement.
- The ten content areas mirror the aeronautical-knowledge headings in 14 CFR 61.65(b), not a published weighted blueprint.
- The FAA's CY2025 report shows 2,751 IGI administrations and a 99.71% pass rate, but that is not a first-attempt rate.
What the Ground Instructor Instrument Exam Actually Is
Before you buy a single study product, get the identity of this exam straight. The credential discussed here is the Instrument Ground Instructor (IGI) rating, issued by the Federal Aviation Administration. The associated FAA knowledge test is named Ground Instructor Instrument, and its test code is IGI. It is not the Instrument Rating Airplane (IRA) test, not the Flight Instructor Instrument Airplane (FII) test, not the Advanced Ground Instructor (AGI) test, and not Fundamentals of Instructing (FOI). Mixing these up is the most common source of wasted study hours, because the question banks, supplements, and purposes differ.
An instrument ground instructor teaches the aeronautical knowledge behind instrument flight: regulations, charts, weather, navigation, air traffic control procedures, and decision making. The privileges concern instrument ground instruction and applicable endorsements. They do not include authority to provide flight instruction. If your goal is to sit in the right seat and teach instrument approaches in an aircraft, that is a different certificate with a different path.
If you are still orienting yourself, our explainer on what IGI certification is covers the basics, and the IGI requirements guide goes deeper on eligibility. This article focuses on how to pass the knowledge test efficiently.
Exam Mechanics: Questions, Time, Score, and Fees
The FAA Airman Knowledge Testing Matrix specifies the numbers that matter. Verify them against the current matrix before test day, since the FAA revises these documents periodically.
| Item | IGI Knowledge Test |
|---|---|
| Scored questions | 50 (excluding any unscored validation items) |
| Time allowed | 150 minutes |
| Passing score | 70% |
| Minimum testing age | 16 |
| Format | Computer-delivered, multiple choice |
| Testing provider | PSI, at authorized knowledge-testing centers |
| Voucher price published by PSI | US$175 plus applicable tax |
| Testing supplement | FAA-CT-8080-3F |
The 150-Minute Clock
Some competing prep pages describe a two-hour window. The FAA matrix lists 150 minutes. That is two and a half hours for 50 scored questions, which works out to roughly three minutes per question before you account for review time. For most candidates, time is not the binding constraint. Careless reading and chart interpretation errors are.
Scored Questions vs. Validation Items
The matrix lists 50 questions and notes that this excludes any unscored validation items. The FAA uses validation items to evaluate potential future questions, and they do not count toward your score. The exact number of extra items is not established by the testing matrix, so do not assume a specific count. Practically, this means you cannot tell which questions are scored, so treat every question as if it counts.
What the $175 Does and Does Not Cover
The US$175 figure is PSI's published price for an FAA Airman Knowledge Test voucher, plus applicable tax. It is the test-voucher price only. It is not the cost of a preparation course, and it is not the total cost of any separately required FOI test if you need one. For a fuller budget picture, see the IGI certification cost breakdown.
Eligibility, FOI Exemptions, and Endorsement Rules
One of the pleasant surprises of this rating is how short the prerequisite list is. Under 14 CFR 61.213, you need to be at least 18 for the certificate, meet the specified English proficiency, pass the applicable aeronautical-knowledge examination, and satisfy the FOI knowledge requirement unless you are exempt. Section 61.213 does not require a pilot certificate, a minimum amount of flight time, or a practical flight test for this ground instructor rating. Note the distinction: the minimum age to take the knowledge test is 16, while the minimum age for the certificate is 18.
FOI Exemptions
FOI knowledge is a separate requirement from the IGI test itself. You may be exempt if you hold a ground or flight instructor certificate, hold a qualifying teaching certificate that permits teaching at grade 7 or higher, or are employed as a teacher at an accredited college or university. If none of those apply, plan for the FOI test as an additional step and budget for it separately.
Initial Test vs. Retest
For your initial IGI knowledge test, no instructor endorsement or other written authorization is required. You do need an FAA Tracking Number (FTN) obtained through IACRA and acceptable identification. If you fail, the retest rules are stricter: you must present the failed Airman Knowledge Test Report and the required instructor training and proficiency endorsement. That endorsement requirement is a practical reason to prepare thoroughly the first time. Plan for the extra scheduling step if it happens. Our scheduling guide covers how to approach test windows.
Key Takeaway
Create your IACRA account and obtain your FTN well before you book a seat. Name mismatches between your ID and your FAA record are an avoidable reason to be turned away at the testing center.
The Ten Knowledge Areas and How to Study Each
Here is a point many prep sites blur: the ten content areas below correspond to the aeronautical-knowledge headings in 14 CFR 61.65(b), which 61.213 incorporates for this rating. They are statutory knowledge areas, not an FAA-published weighted exam blueprint. The IGI testing matrix points to the FAA-CT-8080-3F supplement and Learning Statement Codes rather than an independently weighted outline. That means anyone quoting you exact percentages per domain is guessing. Study all ten, with extra time on the areas where you personally are weakest. For an area-by-area deep dive, see the IGI exam domains guide.
Domain 1: Federal Aviation Regulations Applying to IFR Flight Operations
Know the regulations that govern instrument flight, because exam questions often hinge on a precise regulatory condition.
- Instrument currency and equipment requirements
- IFR flight plan requirements and alternate airport rules
- Minimum altitudes, communications failure expectations, and clearance compliance
Domain 2: Aeronautical Information Manual (AIM) Material for IFR
The AIM explains procedures rather than imposing regulations, and questions test whether you can tell the difference.
- Approach and departure procedure concepts
- Pilot and controller responsibilities
- Recommended practices versus mandatory requirements
Domain 3: Air Traffic Control System and Procedures for Instrument Flight
Understand what clearances mean and what a pilot must do when they are issued, amended, or lost.
- Clearance structure and readbacks
- Holding, vectoring, and radar services
- Lost communications and procedural expectations
Domain 4: IFR Navigation and Approaches Using Navigation Systems
This is where conceptual teaching skill shows. You should be able to explain how systems work, not just which button to press.
- Course and bearing interpretation on instruments
- Approach types and what each guidance source provides
- System limitations and cross-checking
Domain 5: En Route and Instrument Approach Procedure Charts
Chart questions reward methodical reading. Practice with the supplement figures until the legends feel familiar.
- Minimum altitudes, fixes, and holding patterns on en route charts
- Approach plate sections: briefing strip, plan view, profile, minimums
- Notes, restrictions, and alternate minimum considerations
Domain 6: Aviation Weather Reports and Forecasts
Procurement and use of weather products, plus the elements of forecasting trends from that information and personal observation.
- Decoding reports and forecasts
- Reading charts and understanding product limitations
- Connecting data to expected conditions along a route
Domain 7: Safe and Efficient Operation of Aircraft Under IFR
Integrates the earlier areas into real-world instrument flying considerations.
- Instrument scan and control concepts
- Performance and planning for IFR trips
- Operating in instrument conditions safely and efficiently
Domain 8: Critical Weather Situations and Windshear Avoidance
Know how hazardous conditions develop, how to recognize them, and what avoidance looks like.
- Thunderstorm and icing awareness
- Low-level windshear recognition and avoidance
- When to divert, delay, or cancel
Domain 9: Aeronautical Decision Making and Judgment
Questions are scenario-driven. Expect to choose the response that reflects sound risk management.
- Hazardous attitudes and their antidotes
- Risk assessment and personal minimums
- Go/no-go reasoning
Domain 10: Crew Resource Management and Communication
CRM covers crew communication and coordination, and applies even to small-aircraft IFR operations.
- Workload management and task prioritization
- Clear, standard communication
- Mutual cross-checking and situational awareness
IGI vs IRA, FII, and AGI: Different Tests, Different Jobs
These acronyms get confused constantly, and the exams do not overlap perfectly. The table compares their purpose rather than claiming identical content.
| Credential/Test | What It Is | Key Distinction |
|---|---|---|
| IGI | Knowledge test for the Instrument Ground Instructor rating | Qualifies you to teach instrument ground subjects; no flight instruction privileges |
| IRA | Knowledge test for the Instrument Rating, Airplane | For pilots earning their own instrument rating, not for instructing |
| FII | Flight Instructor Instrument Airplane knowledge test | Part of the path to flight instruction in instrument training |
| AGI | Advanced Ground Instructor knowledge test | A broader ground instructor rating covering more than instrument subjects |
Studying only IRA material will leave gaps, since the IGI emphasis includes teaching-relevant understanding of the full set of aeronautical-knowledge areas. Conversely, do not assume IGI prep covers a flight instructor test. Choose the exam that matches the credential you actually want. Our difficulty guide discusses how the IGI compares in practice.
What the FAA Pass-Rate Data Does and Does Not Tell You
The FAA's CY2025 Airman Knowledge Test Volume Report records 2,751 IGI test administrations, a 99.71% passing rate, and a 93.11% average score. Those are striking numbers, and they deserve careful interpretation.
The useful takeaway is that the 70% threshold is routinely cleared by prepared candidates, and the average score sits far above it. Aim to be consistently above passing on timed practice rather than hovering near the line. More context lives in our pass rate analysis and the passing score explainer.
A Six-Week Plan Built Around the Domains
Generic schedules fail because they ignore how these ten areas depend on one another. Regulations and AIM knowledge support ATC and charts, and weather feeds directly into decision making. The sequence below respects those dependencies. Adjust the pace to your background: a working instrument pilot may compress the early weeks, while a newcomer may stretch them.
Regulatory Foundation (Domains 1-2)
- Read the IFR-relevant regulations and AIM material side by side
- Sort each rule into "required" or "recommended" categories
- Take a short untimed quiz to find weak spots
ATC and Navigation (Domains 3-4)
- Work through clearance types and communication procedures
- Review navigation system principles and approach guidance types
Charts (Domain 5)
- Practice reading en route and approach charts using supplement figures
- Drill legends, symbols, and minimums until reading is automatic
Weather (Domains 6 and 8)
- Decode reports and forecasts repeatedly
- Study critical weather and windshear recognition and avoidance
Operations and Human Factors (Domains 7, 9, 10)
- Study safe IFR operations and scenario-based judgment
- Practice CRM and ADM questions for the reasoning pattern
Integration and Timed Practice
- Take full 50-question practice sets under a 150-minute clock
- Revisit only the domains where you still miss questions
When you reach week six, use the IGI practice test to simulate exam pacing, and keep our one-page cheat sheet handy for last-minute review of regulatory and weather facts. For a complete overview of the study approach, return to the main IGI study guide.
Test-Day Logistics and Rules
On test day, bring acceptable identification and be prepared to confirm your FTN. The testing supplement is provided at the center, and outside study materials are prohibited. Test-aid rules, covered in FAA Order 8080.6H, Chapter 3, generally permit approved calculators and navigation aids, subject to memory clearing and proctor approval. Use the active order rather than the canceled AC 60-11C that some older guides still cite.
- Arrive early so ID and registration checks do not eat into your focus.
- Use the full 150 minutes if needed; there is no bonus for finishing early.
- Flag chart-heavy questions and return after answering the quicker ones.
- Read each stem fully, since many errors come from missing a qualifier such as "not" or "except."
After You Pass: Permanence vs. Currency
Once you have the rating, an important distinction applies. Under 14 CFR 61.19(e), ground instructor certificates are issued without an expiration date. But that does not mean you can instruct indefinitely without maintaining currency. To exercise privileges, 61.217 requires one of several alternatives within the preceding 12 calendar months: qualifying ground-instructor activity, qualifying flight-instructor activity, an approved flight instructor refresher course, or an authorized-instructor proficiency endorsement. Do not confuse this with a continuing-education unit requirement; no fixed CEU count applies.
Whether the rating pays off depends on your career plan. Ground instruction roles vary widely, and no verified credential-specific salary premium is established here. Our ROI analysis, salary guide, and IGI jobs overview separate credential eligibility from broader ground-instructor job pay. If you want a structured path, our IGI training resource covers preparation options, and you can start drilling with the practice question bank at any point.
Frequently Asked Questions
The FAA testing matrix lists 50 questions, excluding any unscored validation items, with a 150-minute time limit. The passing score is 70%.
Not for your initial attempt. You need an FAA Tracking Number through IACRA and acceptable identification. If you fail and retest, you need the failed Airman Knowledge Test Report plus the required instructor training and proficiency endorsement.
Under 14 CFR 61.213, FOI knowledge is required unless you are exempt. Exemptions include holding a ground or flight instructor certificate, holding a qualifying teaching certificate for grade 7 or higher, or teaching at an accredited college or university.
No. It is the FAA's CY2025 administration-level passing rate across 2,751 IGI administrations. It is not a first-attempt-only figure and not a 2026 figure.
The certificate itself has no expiration date, but exercising its privileges requires meeting one of the 61.217 recent-experience alternatives within the preceding 12 calendar months.
Success on this exam comes from matching your preparation to its real structure: ten statutory knowledge areas, a 150-minute computer-based test, and a 70% threshold that prepared candidates routinely clear. Build your plan around the domains, practice with chart-based questions under timed conditions, and confirm every number against current FAA sources before you book your seat.