Airman Certification Standards
ACS IR.VIII.A
Checking Instruments and Equipment
Knowledge
Procedures for documenting in-flight/postflight discrepancies.
Risk Management
Performance and documentation of postflight inspection and aircraft discrepancies.
Skill
Conduct a postflight inspection and document discrepancies and servicing requirements, if any. 25 Appendix 1: Practical Test Roles, Responsibilities, and OutcomesInstrument Rating – Airplane ACS (FAA-S-ACS-8C) Appendix 1: Practical Test Roles, Responsibilities, and Outcomes Eligibility Requirements for an Instrument Rating The prerequisite requirements and general eligibility for a practical test and the specific requirements for the issuance of an Instrument Rating – Airplane can be found in 14 CFR part 61, sections 61.39(a) and 61.65. If an applicant holds both single-engine and multiengine class ratings on a pilot certificate and takes the instrument rating practical test in a single-engine airplane, the certificate issued must bear the limitation “Multiengine Limited to VFR Only.” If the applicant takes the test in a multiengine airplane, the instrument privileges will be automatically conferred for the airplane single-engine rating. In accordance with 14 CFR part 61, sections 61.39, and 61.65(a)(7), the applicant must pass the airman knowledge test before taking the practical test, if applicable to the certificate or rating sought. Applicants who hold an instrument rating are not required to take an additional instrument knowledge test. The knowledge test corresponding to this ACS appears in the table below. Test Code Test Name Number of Questions Age Allotted Time Passing Score IRA Instrument Rating - Airplane 60 15 2.5 70 Use of the ACS During a Practical Test The practical test is conducted in accordance with the ACS and FAA regulations that are current as of the date of the test. The Areas of Operation in this ACS align with the Areas of Operation found in 14 CFR part 61, section 61.65(c). Each Area of Operation includes Tasks appropriate to that Area of Operation. Each Task contains an Objective stating what the applicant must know, consider, and/or do. The ACS then lists the aeronautical knowledge, risk management, and skill elements relevant to the specific Task, along with the conditions and standards for acceptable performance. The ACS uses Notes to emphasize special considerations. During the ground and flight portion of the practical test, the FAA expects evaluators to assess the applicant's mastery of the topic in accordance with the level of learning most appropriate for the specified Task. The oral questioning will continue throughout the entire practical test. For some topics, the evaluator will ask the applicant to describe or explain. For other items, the evaluator will assess the applicant's understanding by providing a scenario that requires the applicant to appropriately apply and/or correlate knowledge, experience, and information to the circumstances of the given scenario. The flight portion of the practical test requires the applicant to demonstrate knowledge, risk management, flight proficiency, and operational skill in accordance with the ACS. The elements within each Task in this ACS are coded according to a scheme that includes four components. For example,
Retrieved from ecfr.gov on July 17, 2026.