This SAE Aerospace Standard (AS) covers automatic pilots intended for use on aircraft to automatically operate the primary and trim aerodynamic controls to maintain stable flight and/or to provide maneuvering about any of the three axes through servo control. Automatic control functions essential for primary or augmented flight control are excluded.
SAE AS440B-2020 history
2020SAE AS440B-2020 Automatic Pilots (Turbine Powered Subsonic Aircraft)
1996SAE AS440A-1996 Automatic Pilots (Turbine Powered Subsonic Aircraft)
1963SAE AS440-1963 AUTOMATIC PILOTS (Turbine Powered Subsonic Aircraft)