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Aviation AVI 121. Private Pilot, Requalification Forty-five classroom hour transitional course for students entering the Institute with a Private Pilot certificate who desire to continue in the Commercial-instrument sequence ( AVI 130 through AVI 210/AVI 211). Includes instruction on airplane operations, navigation, and meteorology. Includes 17 hours of flight training and 3 hours in a flight simulator in the flight laboratory. Students enrolling in this course will also participate in up to 5 hours of research flight experiments. Prerequisite: Private Pilot certificate (with a minimum of 60 hours of flight), and consent of director. 2 hours. Credit is not given for both AVI 120 and AVI 121.