FAA AC 135.169-1:1979
FAA AC 135.169-1:1979 Small, Propeller-driven Air Taxi Airplanes That Meet Section 135.169 (formerly Section 135.144) Gives a summary of and information on small propeller-driven air taxi airplanes that comply with Section 135.169(b) (formerly Section 135.144) and may continue operations under FAR 135 with 10 or more