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The recently developed SP-30 control system for commercial and military jet transport aircraft is discussed in this paper in terms of its operation, design, and performance. The modes of operation for a typical profile are summarized, and manual and automatic flight control features are described. Characteristic control equations are used to define the advanced automatic pilot principles which include inherent parameter control and inertial damping. The paper also presents flight test and analog data to verify the increased performance obtained with the SP-30 flight control system.