Whether a 70-year-old can serve as a pilot depends entirely on the specific category of flight operations. Under international aviation regulations set by the International Civil Aviation Organization and adopted by many national authorities, commercial airline pilots face a mandatory retirement age cap—frequently set at age 60 or 65 for multi-pilot scheduled international air carrier operations. However, for private general aviation, recreational flying, flight instruction, and certain corporate or charter flights under specific regulatory exemptions, healthy individuals well past the age of 70 can continue flying legally, provided they successfully pass comprehensive annual or biannual aviation medical examinations.