77ae0e81____Code_of_Federal_Regulations__ducting_an_operation_requiring
(ii) Age 40 or older 6th month after the month of the date of examination shown on the medical certificate.
an airline transport pilot certificate for pilot-in-command privileges, for second-in-command privileges in a flag or supplemental operation in part 121 requiring three or more pilots, or for a pilot flightcrew member in part 121 operations who has reached his or her 60th birthday.
eCFR — Code of Federal Regulations