As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTING, IB FLAPS WENT ASYMMETRIC FROM POSITION 5 DEGREES TO 2 DEGREES COMPLETED ABNORMAL CHECKLIST. JETTISONED FUEL DOWN TO MAX LANDING WEIGHT. AIRCRAFT DIVERTED BACK AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE RESET AND RAN FLAPS 3 TIMES, OPERATION CHECK NORMAL. LUBRICATED ALL POSITION INDICATOR TRANSMITTERS PULLEYS AND CABLES. RAN FLAPS SEVERAL TIMES, CHECK NORMAL OPERATION. NO ASYMMETRY IAW MM27-51-0. AIRCRAFT RETURNED TO SERVICE.