Section 121.901 - Purpose and eligibility(a) Contrary provisions of parts 61, 63, 65, 121, 135, and 142 of this chapter notwithstanding, this subpart provides for approval of an alternative method (known as "Advanced Qualification Program" or "AQP") for qualifying, training, certifying, and otherwise ensuring competency of crewmembers, aircraft dispatchers, other operations personnel, instructors, and evaluators who are required to be trained under parts 121 and 135 of this chapter.(b) A certificate holder is eligible under this subpart if the certificate holder is required or elects to have an approved training program under §§ 121.401 , 135.3(c) , or 135.341 of this chapter.(c) A certificate holder obtains approval of each proposed curriculum under this AQP as specified in § 121.909 .