This AC provides guidance for applicants, pilots, evaluators, and instructors who seek to add an initial powered-lift category rating and specific type rating to their existing United States (U.S.) pilot certificate in accordance with Special Federal Aviation Regulation (SFAR) 120, Powered-Lift: Pilot Certification and Training; Operations Requirements.

Provides guidance regarding test cell correlation procedures for test cells used for in-service acceptance testing of turbofan and turbojet engines. This AC discusses the effects of the design, operation, and modification of a test cell and engine test hardware on engine performance.

(2) Directly relating pilot training and qualification requirements to fleet characteristics, operating concepts, and pilot assignments.

This AC provides information that industry may use to develop and revise the minimum scheduled maintenance tasking/interval requirements for derivative or newly type-certificated aircraft and powerplants for Federal Aviation Administration (FAA) approval.