What was found
ON DEPARTURE, FUEL CROSSFEED VALVE BECAME UN CONTROLLABLE CYCLING TO OPEN AND CLOSED POSITION ON ITS OWN. DISAGREEMENT LIGHT ILLUMINATED IN BOTH SWITCH POSITIONS, TURNED BACK AND LANDED WITHOUT FURTHER EVENT. MAINTENANCE REMOVED AND REPLACED THE FUEL CROSSFEED VALVE ACTUATOR IN RT WING FUEL TANK IAW BMM 28-22-21, PG. 401. CYCLED VALVE SEVERAL TIMES, OVERHEAD AGREEMENT LIGHT AGREED WITH VALVE POSITIONS.