This subpart applies to operation of large and transport category U.S.-registered civil aircraft.
ACE rules page: Part 91 in plain English
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14 CFR · PART 91
§ 91.601 Applicability.
Official text · Current as of Oct 19, 2026 · from eCFR
Not legal advice. This is the official text as published in the eCFR, which is updated daily but is not the legal edition. For legal purposes, use the annual Code of Federal Regulations or ask an aviation attorney.