As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COS - FLT 659 - AFTER TAKEOFF, EIGHT DEGREES FLAPS WAS SELECTED AND A FLAP ASYMMETRY MESSAGE APPEARED ON MFDU. FLIGHT CREW DECLARED AN EMERGENCY AND LANDED COS WITHOUT FURTHER INCIDENT. MAINTENANCE RESET ASYMMETRY FAULT BALL ON MAINTENANCE TEST PANEL AND CYCLED FLAPS SEVERAL TIMES UNABLE TO DUPLICATE FAULT. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)