Product Code:SAE AIR4922 Title:Primary Flight Control Hydraulic Actuation System Interface Definition Issuing Committee:A-6a3 Flight Control Systems Committee Scope:This SAE Aerospace Information Report (AIR) provides a description of the interfacesand their requirements for generic and specific hydraulic actuation systems used in the flight control systems of manned aircraft. Included are the basic control system characteristics and functional requirements, and the essential interfaces (structural, mechanical, hydraulic power, control input, status monitoring, and environment). Major design issues, requirements, and other considerations are presented and discussed.