What was found
AC EXPERIENCED A FLAP ASYMMETRIC LIGHT IN FLIGHT. THE CREW DID NOT TRY TO PUT THE FLAPS DOWN AND DIVERTED FOR A NO FLAP LANDING. CRITICAL CARE MAINTENANCE DROVE DOWN TO REPAIR THE AIRCRAFT. MAINTENANCE COULD NOT DUPLICATE THE PROBLEM AFTER SEVERAL ATTEMPTS. MAINTENANCE INSPECTED AND CLEANED ALL CONNECTORS, INSPECTED HYDRAULIC SYSTEMS, AND FLAP RIGGING AND CABLES. MAINTENANCE C/W ALL OPERATIONAL CHECK IAW THE MM. THE PROBLEM WAS NEVER DUPLICATED.