As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH INTO MEX TRAILING EDGE FLAPS WOULD NOT EXTEND. LANDED WITHOUT INCIDENT. PERFORMED FLAP SLAT ELECTRONIC UNIT BITE FOUND NUMBER 3 FLAP SKEW SENSOR AT FAULT. REPLACED SENSOR AS PER MM 27-59-01-2, CHECKED OPN OK FOR SERVICE.