Parts 61 and 121 of title 14, of the Code of Federal Regulations contain similar limitations. However, a recent amendment to the ICAO standards would remove this pilot pairing requirement. Instead, all pilots serving on airplanes in international commercial air transport operations with more than one pilot may serve beyond 60 years of age (until age 65) without being paired with a pilot under 60 years of age. This ICAO amendment triggers the sunset of the statutory authority that provides the basis for the crew pairing limitations in title 14.
Source and image: FAA