As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-20 CHECK A .5 INCH CRACK WAS FOUND IN AFT CARGO COMPARTMENT FRAME SHEAR TIE AT BS 807, RBL 4. MAINTENANCE REMOVED DAMAGED SECTION OF AFT CARGO COMPARTMENT FRAME SHEAR TIE AT BS 807, RBL 4; FABRICATED A NEW REPLACEMENT SECTION OF SHEAR TIE; INSTALLED REPAIR PART IAW B737-300 SRM 53-00-07 FIG 210 SHEETS 1-4.