As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FOUND THE RT MAIN FRAME AT FS 699 FORWARD UPPER FLANGE CRACKED AT THE SEAT TRACK ATTACH ZEE ANGLE OUTBOARD ATTACH HOLE. REPAIRED THE MAIN FRAME IAW DC-9 SB 53-131 AND ABX REA D953-202248-MR. (REPAIR DOUBLER PN 5935650 INSTALLED).