As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REPETITIVE INSPECTIONS, THE I/B SLAT TRACKS ON THE NR 3 AND NR 4 SLATS WERE FOUND TO HAVE LOOSE BOLTS IN THE DOWNSTOP FITTINGS. THE CONDITION IS TYPICAL OF BAC S/B 727-57-0171. BOTH SLAT TRACKS FOR THE NR 3 AND NR 4 SLATS WERE MODIFIED PER THE S/B TO REPAIR THE DISCREPANCY. THE WORK IS DOCUMENTED PER ER/A 378641-14AD.