What was found
(CAN) ON FLAP RETRACTION AFTER TAKEOFF, FLAP WARNING LIGHT CAME ON. AIRCRAFT RETURNED TO AIRPORT AND CARRIED OUT A SUCCESSFUL FLAP RESET. AIRCRAFT DEPARTED, AND ON FLAP RETRACTION, FLAP WARNING CAME ON WITH FLAPS STOPPING BETWEEN 0 AND 15 DEGREES. AIRCRAFT RETURNED TO BASE. FLAP FAULT CHECK WAS CARRIED OUT AND FAULTS INDICATED A STIFFNESS IN THE SYSTEM. FOUR FLAP CYCLES WERE CARRIED OUT AND FLAP ACTUATORS CHECKED.THE RT IB ACTUATOR WAS FOUND EXTREMELY HOT. ACTUATOR WAS CHANGED AND AIRCRAFT RETURNED TO SERVICE.