As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PER CREW - ON FINAL APPROACH INTO GCM FLAPS LEVER TO 10 AND THEN TO 5. FLAP POSITION WENT TO 2 AND FLAPS FROZE AT 2. DIVERTED TO CUN USED ALTERNATE FLAPS FOR LANDING. ON INITIAL EVALUATION FOUND MSG 27-51351 TE FLAP UCM. WILL TROUBLESHOOT THE DISCREPANCY AS PER FIM TAS 27-51 TASK 830. RESTORED ACT IN NORMAL CONFIG. REPLACED FSEU IAW AMM 27-51-01/401. ALL TEST PASSED AND NO INDICATIONS NOTED AT THIS TIME.