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Linear Parameter Varying (LPV) system is an important class of system, as it covers many physical systems. In this paper, the routine Kalman filtering scheme derivations are entertained to modify for generalized LPV systems. The original system is unstable, for controlling purpose a state-feedback controller is employed. For simulation purpose, a real time case study of Boeing-747 model is adopted. The results comprehend attractive features for modified Kalman filtering scheme.