As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS THAT ON BASE TO FINAL WHILE EXTENDING FLAPS, RECEIVED TRAILING EDGE FLAP ASYM MESSAGE. COMPLIED WITH QRH WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LH OUTBOARD #2 FLAP TRNASMITTOR IAW AMM 27-51-45. OPS CHECK OK.