What was found
SFO - LEFT AND RIGHT ENGINE OVERTORQUE REPORTED DURING ENCOUNTER WITH AIRCRAFT (B757) WAKE TURBULENCE DURING APPROACH. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED ENGINES, PROPELLER ASSEMBLIES FOR OVERTORQUE CONDITION AND AIRFRAME FOR SEVERE TURBULENCE. NO DEFECTS NOTED. REMOVED PROPELLERS FOR DETAILED INSPECTION. NO DEFECTS REPORTED FOLLOWING PROPELLER ASSEMBLY TEAR-DOWN. AIRCRAFT RETURNED TO SERVICE. (X)