As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT BS 1520 STRINGER 21L FRAME INBD FLANGE DENTED. NO DENTS ALLOWED ON FREE FLANGE PER SRM 53-00-07, FIG. 101, FOUND OUT OF LIMITS PER SRM B757 53-00-07, FIG 101. REMOVED AND REPLACED FRAME IAW SRM 51-40-02 AND B757 DRAWING 146N1017, S26L - S26R. MAJOR REPAIR