What was found
ON SHORT FINAL APPROACH, RECIEVED A TE FLAP ASYM CAUTION MSG SHORTLY AFTER SELECTING FLAPS 30 FOR LANDING. A/C WENT AROUND, INFORMED ATC THAT THEY HAD A FLIGHT CONTROL ISSUE, ACCOMPLISHED THE QRH, AND THEN INFORMED ATC THAT THEY COULD CONTINUE THE APPROACH AND LAND. ATC ELECTED TO DECARE AN EMERGENCY ON THEIR BEHALF. CREW LANDED WITHOUT ANY FURTHER ISSUES. MAINTENANCE FOLLOWED KAC FIM 27-51 FT 809 WITH NO FAULTS FOUND. PERFORMED 30/40 TEST WITH NO FAULTS FOUND AND ALL TEST PASSED IN REF TO KAC AMM 22-00-02. ALSO DID THE FSEU DOWNLOAD WITH ALL IN SPEC. A/C REMAINS CAT IIIB. AIRCRAFT RETURNED TO SERVICE.