# IRA Knowledge Test — Study Plan from the Free FAA Corpus Pass the FAA Instrument Rating Airplane (IRA) written: 60 questions in 2 hours across the IFH, IPH, and weather handbooks. Free public-domain corpus, adaptive daily plan. Canonical URL: https://exclam.ai/faa/ira/ [FAA](https://exclam.ai/faa/index.md)›IRA, Instrument Rating — Airplane FAA IRA · Updated August 2026 Instrument study adds IFR procedures, instrument flying, navigation, and weather. Our ACS text comparison found no PAR match for about 62% of IRA elements. This measures wording, not exam questions. exclam.ai organizes readings from the IFH, IPH, and Aviation Weather Handbook into a study plan. Questions 60 Allotted time 2.0 hours CY2025 pass rate 94.38% Typical prep ~66 hours [See the free corpus](https://exclam.ai/faa/ira/index.md#corpus) ## Test format 60 multiple-choice questions, 2.0 hours, passing score 70%. Taken at PSI testing centers, with embedded images and access to CT-8080-3F until its announced removal. Non-scored validation questions may be added; the allotted time accounts for them. About 38% of IRA ACS element texts matched PAR in our comparison; about 62% did not. These approximate text matches do not establish exam weighting. IFH, IPH, AWH, and PHAK support instrument study. Include the regulations, charts, and other references identified by the applicable ACS. Practice approach plates and en route charts, including the FAA’s embedded-image samples. From October 26, 2026, IRA includes image questions outside CT-8080-3F. CY2025: 27,143 tests, 94.38% pass rate, 86.15% average score (FAA AKT Volume Report). The IRA passing score is 70%. Verify current testing details at [faa.gov/training\_testing](https://www.faa.gov/training_testing/testing) before scheduling. IRA already uses embedded images. Starting October 26, 2026, some image questions use charts outside CT-8080-3F. Printed supplements remain available until the FAA announces their removal. See the [August 2026 FAA testing advisory](https://www.faa.gov/training_testing/testing/August_2026_ATCA.pdf). ## IRA knowledge areas These study topics summarize the FAA Airman Certification Standards and source handbooks. Consult the applicable standards and references for the complete requirements. ### IFR Regulations and Procedures The 14 CFR 91 instrument rules: currency, equipment, altitudes, clearances, and alternates. Instrument currency and recency requirements IFR fuel, alternate, and equipment requirements Clearances, communications, and lost-comm procedures Minimum altitudes: MEA, MOCA, MRA, MCA, OROCA ### Flight Instruments and Attitude Instrument Flying How the gyros, pitot-static system, and electronic displays work — and fail. Pitot-static system errors and blockages Gyroscopic instruments and vacuum system failures Electronic flight displays (PFD/MFD) and their failure modes Attitude instrument flying: control-performance and primary-supporting methods ### IFR Navigation and Instrument Approaches En route navigation, holding, and flying every approach type on the plate. VOR, DME, GPS/RNAV, and ILS principles and limitations Departure, en route, arrival, and approach chart interpretation Holding pattern entries and wind correction Precision vs non-precision approaches; DA/DH vs MDA; missed approach procedures ### Weather Theory, Products, and Hazards The weather half of the instrument written, from icing physics to prog charts. Icing conditions, types, and escape strategies Thunderstorms, turbulence, and wind shear METARs, TAFs, AIRMETs/SIGMETs, and graphical forecasts Personal weather minimums and go/no-go decisions ### ADM and Aeromedical Factors Spatial disorientation and decision-making under IMC stress. Vestibular illusions (the leans, graveyard spiral, somatogravic illusion) Hypoxia, hyperventilation, and oxygen requirements Single-pilot resource management and automation management exclam.ai does not reproduce FAA test questions. Area names and focus points above are paraphrased from the publicly published ACS at faa.gov. ## Free FAA corpus for the IRA These official FAA handbooks and standards provide a starting source list. The ACS also references regulations, the AIM, advisory circulars, charts, and aircraft-specific POH/AFM material. Use the references applicable to your test alongside these documents. [IFH Instrument Flying Handbook (FAA-H-8083-15B) The core instrument text: flight instruments, attitude instrument flying, navigation systems, and IFR flight fundamentals.](https://www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/FAA-H-8083-15B.pdf) [IPH Instrument Procedures Handbook (FAA-H-8083-16B) Departures, en route procedures, arrivals, and instrument approaches as actually flown in the IFR system.](https://www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/instrument_procedures_handbook/FAA-H-8083-16B.pdf) [AWH Aviation Weather Handbook (FAA-H-8083-28B) The consolidated weather reference — theory, hazards, and every weather product the ACS references.](https://www.faa.gov/sites/faa.gov/files/FAA-H-8083-28B.pdf) [PHAK Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C) The base aeronautical-knowledge text: aerodynamics, systems, performance, airspace, navigation, and weather theory.](https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/faa-h-8083-25c.pdf) [ACS (IRA) Instrument Rating — Airplane Airman Certification Standards (FAA-S-ACS-8C) The official test blueprint: every IRA question maps to a knowledge element in this document.](https://www.faa.gov/training_testing/testing/acs/instrument_rating_airplane_acs_8.pdf) ## How exclam.ai helps with the IRA ### Study the real handbooks The FAA PDFs above are free to study. Upload them with the additional references your test requires, and exclam.ai builds a reading plan. ### Quizzes mapped to the source Practice questions and quick checks generated from the handbooks themselves, mapped to the 5 IRA knowledge areas. Every answer traces back to a page. ### A dated daily plan ~66 hours of weighted coverage paced to your test date, with review of weak areas and recomputation when you fall behind. ## IRA questions How long should I study for the IRA written? Allow 6-10 weeks as a starting planning estimate, then adjust for your knowledge and practice results. The suggested plan has about 66 hours of reading and practice. This is a study estimate, not an official exam weighting. How hard is the IRA compared to the private written? CY2025 pass rates were 94.38% for IRA and 89.56% for PAR. IRA’s average score was 86.15%. These results describe different candidate groups; they do not establish relative difficulty or explain why candidates pass. Which handbook matters most? The Instrument Flying Handbook (IFH) is the core text, but weather carries a large question share — do not leave the Aviation Weather Handbook to the last week. Is the FAA corpus really enough without a paid course? The FAA handbooks are a foundation, not a complete source list by themselves. The ACS also references regulations, the AIM, advisory circulars, charts, and aircraft-specific POH/AFM material. Use the applicable references and practice results to check your preparation. ## Other exclam.ai study systems Preparing for more than one exam? exclam.ai works across every major professional credential. Your flashcard history, spaced repetition data, and study preferences carry across verticals in a single account. 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