Abstract : This final report briefly describes research results on a theory of gain scheduling for flight control applications that were obtained by the Principal Investigator and his students over the three-year period of support. Results reported include development of a basic theory of gain scheduling in nonlinear systems, solution of output regulation problems based on an exogenous system assumption for the exogenous signals (including disturbance and scheduling signals), initial development of methods to alleviate performance degradation in the case of rapidly-varying scheduling signals, and an exploratory application of these results to an autopilot design example. Publications describing the results in detail are listed.... Control Theory, Nonlinear Control Systems, Gain Scheduling.