Aeronautics and space. Part61:Certification: pilots, flight instructors, and ground instructors. Section61.156:Training requirements: airplane category—multiengine class rating or airplane type rating concurrently with airline transport pilot certificate.
After July 31, 2014, a person who applies for the knowledge test for an airline transport pilot certificate with an airplane category multiengine class rating must present a graduation certificate from an authorized training provider under part 121, 135, 141, or 142 of this chapter certifying the applicant has completed the following training in a course approved by the Administrator.