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 1520 BETWEEN STRINGERS 26-27 LT WAS FOUND TO BE DENTED. (DAMAGE EXCEEDS ALLOWABLE LIMITS. IAW B757-200 SRM 53-00-07 FIG 101- NO DENTS ALLOWED IN FRAME FLANGE.) FRAME TO BE REPAIRED IAW B757-200 SRM 53-00-07 FIG 201 DETAIL I. CAUSE OF DEFECT WAS UNDETERMINED. DOCUMENTED ON NON-ROUTINE 42815.