Instrument Rating for Airplane Category Airman Certification Standards
Read the current text of this federal regulation online on the eCFR, free.
Read the current text on eCFR
Instrument Rating for Airplane Category Airman Certification Standards is a federal regulation, not a fixed PDF. It is amended in place, so the authoritative version is the live electronic Code of Federal Regulations. Aviator IQ questions that cite it carry the exact regulatory text they test, checked against the edition below.
Open on eCFRWhy Aviator IQ cites this source
Instrument Rating for Airplane Category Airman Certification Standards is a US government public-domain document. Every Aviator IQ question that draws on it stores the exact sentence it tests and checks that quote against this edition (FAA-S-ACS-8C (November 2023)), last verified October 2026. If the FAA reissues it, the citing questions are pulled for review before the new edition ships.