The IRA test is administered on a computer at a PSI testing center. Your result comes on an Airman Knowledge Test Report (AKTR), which lists the ACS or learning statement codes for any areas you missed — your examiner will review these later, which is why aiming well above 70% pays off.
You study from the same question bank the FAA draws from — no surprises on test day. See the exact wording, answers, and the reasoning behind each one.
The FAA revises its question pool over time. We update ours several times a month based on real test-taker feedback, so you're never studying retired questions.
You need an instructor endorsement to sit for the IRA test. When you're scoring consistently, we provide your knowledge test endorsement at no extra cost.
Web-based and always in sync — study on your laptop at home and your phone at the airport. Unlimited practice exams until you're ready.
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The Instrument Rating Airplane (IRA) knowledge test consists of 60 multiple-choice questions. You need at least 42 correct to reach the 70% passing score.
The minimum passing score is 70%, the same as every FAA knowledge test. It's worth aiming higher — your examiner reviews the areas you missed during the oral portion of your checkride, so a stronger score generally means a smoother checkride.
The FAA allots 120 minutes (2.0 hours) for the Instrument Rating Airplane (IRA) test. The exam is taken on a computer at a PSI testing center.
A passing knowledge test result is valid for 24 calendar months. You must complete your practical test within that window, or you'll need to retake the knowledge test.
Studying for a different certificate? See all 21 FAA knowledge test courses →