As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYPICAL CORROSION WAS FOUND ON THE LOWER SURFACE OF THE NR 4 AND NR 5 FLAP TRACKS AND ON THE UPPER SURFACE OF THE MLG AT THE INTERFACE OF THE FLAP TRACK AND THE MLG SUPPORT BEAM. THE CORROSION WAS MACHINED OR SPOTFACED FOR REMOVAL PER THE GUIDANCE OF BAC S/B 727-57-0178 AND PER ER/A 369800-14AD.