14 C.F.R. § 67.311 Cardiovascular.
Title 14 - Aeronautics and Space
Cardiovascular standards for a third-class airman medical certificate are no established medical history or clinical diagnosis of any of the following: (a) Myocardial infarction; (b) Angina pectoris; (c) Coronary heart disease that has required treatment or, if untreated, that has been symptomatic or clinically significant; (d) Cardiac valve replacement; (e) Permanent cardiac pacemaker implantation; or (f) Heart replacement.
Title 14: Aeronautics and Space
PART 67—MEDICAL STANDARDS AND CERTIFICATION
Subpart D—Third-Class Airman Medical Certificate
§ 67.311 Cardiovascular.