As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME AT FS 654.50, BETWEEN STR 14 AND 15 RHS HAS 1/2L BY 1/8W CHAFE MARK WITH 1/8 DIA HOLE EXTENDING THROUGH FRAME LOCATED JUST FORWARD OF APU EXHAUST OPENING. REPAIRED FRAME AT FS 654.50 STR 14-15 RHS BY TRIMMING INBOARD FLANGE FABRICATING AN ANGLE DOUBLER AND INSTALLING DOUBLER IAW WVAC EO 601R-53-0854.