The instrument rating knowledge test — pilots still call it the instrument written is the FAA exam on the aeronautical knowledge required for an instrument rating. It is not the instrument rating. Passing it does not authorize you to fly IFR as pilot in command. Failing it does not end the project. It is one required step on a Part 61 instrument path.
Under 14 CFR 61.65(a), a person who applies for an instrument rating must (among other requirements) receive and log ground training from an authorized instructor or accomplish a home-study course on the knowledge areas in 61.65(b), and receive a logbook or training record endorsement from an authorized instructor certifying that the person is prepared to take the required knowledge test (61.65(a)(4)).
Separately, 14 CFR 61.35 generally requires an instructor endorsement (or other authorized paperwork) before you sit an FAA knowledge test. For most independent students, that endorsement is the testing-center gate. It is a professional judgment about preparation. It is not a forecast of the number on the printout.The knowledge areas in 61.65(b) include the Federal Aviation Regulations that apply to IFR flight, AIM information that applies to IFR operations, air traffic control system and procedures for instrument flight, IFR navigation and approaches, use of IFR en route and approach charts, weather information and decision-making related to IFR, safe and efficient IFR operations, and recognition of critical weather that may affect IFR. Study those topics as material you will later brief and fly, not only as stems to recognize.
FAA knowledge tests are given at FAA-approved testing centers. You bring government photo ID and your authorization — typically the instructor endorsement and the Federal Tracking Number (FTN) you create in IACRA. The exam is multiple choice. The published passing standard is 70 percent. When you finish, you receive an airman knowledge test report with your score and the subject codes for the items you missed. Keep the report. Before a practical test, your instructor is expected to review those missed areas with you. The codes are a study list for the oral, not a grade to hide.
For most certificates and ratings, a passing knowledge-test result is valid for 24 calendar months when you present it for the practical test (14 CFR 61.39). If that window closes first, you take the knowledge test again. That is a calendar rule.
The Instrument Rating Airman Certification Standards describe knowledge, risk management, and skill. The written samples knowledge and some risk management. The practical test samples all three. Students who only memorize question stems often stall when a designated examiner asks them to explain the answer or apply it to a clearance, approach, or weather decision. The more durable habit is to study each ACS topic as material you will later fly and discuss.
A method that works whether or not you buy a course
Download the current Instrument Rating ACS for the rating you want (airplane, helicopter, or powered-lift as applicable).
Read the FAA handbook chapters that map to instrument operations — especially the Instrument Flying Handbook and the Instrument Procedures Handbook, plus the IFR parts of the AIM and the regulations that apply to flight under IFR.
After you read a topic, work practice questions. Write down every miss and the reference that explains it.
Take the questions you cannot settle to an instructor.
When the material is familiar — not just the stems — ask for the knowledge-test endorsement under 61.65(a)(4)
Video can show a procedure or a chart clearly. It is support for a syllabus. It is not a syllabus by itself. Ground training for the rating also sits beside flight training in an aircraft or approved device; the knowledge test does not replace that flight work.
If you want IFR ground prep in one place, Veni, Vidi, Volavi’s Instrument Flight Rules ground course ($249) covers the instrument written path. When you finish the course work, an authorized instructor can review it for the knowledge-test endorsement. Use it when the training is actually done.