{"data":{"id":"us/14-cfr-61.53","jurisdiction":"us","citation":"14 CFR 61.53","heading":"Prohibition on operations during medical deficiency.","body":"(a) Operations that require a medical certificate. Except as provided for in paragraph (b) of this section, no person who holds a medical certificate issued under part 67 of this chapter may act as pilot in command, or in any other capacity as a required pilot flight crewmember, while that person:\n(1) Knows or has reason to know of any medical condition that would make the person unable to meet the requirements for the medical certificate necessary for the pilot operation; or\n(2) Is taking medication or receiving other treatment for a medical condition that results in the person being unable to meet the requirements for the medical certificate necessary for the pilot operation.\n(b) Operations that do not require a medical certificate. For operations provided for in § 61.23(b) of this part, a person shall not act as pilot in command, or in any other capacity as a required pilot flight crewmember, while that person knows or has reason to know of any medical condition that would make the person unable to operate the aircraft in a safe manner.\n(c) Operations requiring a medical certificate or a U.S. driver's license. For operations provided for in § 61.23(c), a person must meet the provisions of—\n(1) Paragraph (a) of this section if that person holds a medical certificate issued under part 67 of this chapter and does not hold a U.S. driver's license.\n(2) Paragraph (b) of this section if that person holds a U.S. driver's license.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER D—AIRMEN","PART 61—CERTIFICATION: PILOTS, FLIGHT INSTRUCTORS, AND GROUND INSTRUCTORS","Subpart A—General"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"51306210a8c73583f251413ee9d2741f5c1bbe3e0f8304678051763898beff1d","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-61.52","next":"us/14-cfr-61.55"},"notice":"GroundRules: Original legal text. Not legal advice."}