What was found
SHIP 9550, THE AIRCRAFT ROLLED AGGRESSIVELY TO THE RIGHT UPON SLAT DEPLOYMENT DURING APPROACH FOR LANDING. THE ROLL REACHED 10-20 DEGREES OF BANK AND THEN WAS CORRECT BACK TO WINGS LEVEL BY THE AUTOPILOT. NO OTHER FAULT MESSAGES OR INDICATIONS WERE OBSERVED. CORRECTIVE ACTIONS: MAINTENANCE FOUND THE SLAT DRUM INBOARD ACTUATOR ROD END BROKEN IN HALF AND THE ACTUATOR OFF THE SLAT DRUM. A NEW LEFT WING INBOARD SLAT DRIVE ACTUATOR WAS INSTALLED. FUNCTIONAL CHECK WAS GOOD, PER B717 AMM 27-90-00 720-801.