As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OAK - FLT 504 - ON APPROACH INTO OAK, OUTBOARD FLAPS STAYED AT 2 WHILE INBOARD FLAPS CONTINUED TO POSITION 5. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT ANY FURTHER PROBLEM. MAINTENANCE CREW CYCLED THE FLAPS 15 TIMES AND NOTED NO DEFECTS, AND THE AIRCRAFT WAS RETURNED TO SERVICE. (X)