As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE VISIT FRAME AT BS 1420 BETWEEN STRINGERS 25 AND 27 LT WAS FOUND TO BE DENTED. (DAMAGE EXCEEDS ALLOWABLE LIMITS IAW B757-200 SRM 53-00-01 FIG 101. - NO DENTS ALLOWED IN FRAME FLANGE). FRAME TO BE REPAIRED IAW B757-200SRM 53-00-07 FIG 20A DETAIL III. CAUSE OF DEFECT WAS UNDETERMINED. DOCUMENTED ON NON-ROUTINE 42809.