As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA CREW REPORTED TE FLAP ASYMMETRY. EMERGENCY DECLARED FLIGHT RETURNED MIA & LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. FOUND RETAINING NUT ON BEARING ASSEMBLY MISSING. REPLACED BEARING ASSEMBLY ON RT FLAP, SYS GND CHECKED NORMAL, OPERATION CLOSED.