What was found
DURING COMPLIANCE, THE AILERON SPROCKET WAS FOUND TO HAVE A POSSIBLE DEFECT. DOING A VISUAL INSPECTION BETWEEN THE TWO GEARS OF THE AILERON SPROCKET, ON THE LARGE GEAR NEAR THE SHAFT AREA, IT APPEARS THE WELDING MAY NOT HAVE BEEN COMPLETED IN A SMALL AREA, APPROXIMATELY .2500 INCH LONG, OR A CORROSION PIT HAS STARTED. THE DEFECT LOOKS LIKE A CORROSION TYPE OF PIT. THERE WAS NO VISUAL EVIDENCE OF A CRACK. NO NDT WAS PERFORMED ON THE UNIT AT THIS TIME. UNIT WAS CHANGED AS A PRECAUTION.