As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-18 CHECK A 7/8 INCH CRACK WAS FOUND ON BS 178 RT SIDE FRAME, PASSING THROUGH WL 207 COCKPIT FLOOR AREA.. MAINTENANCE REMOVED DAMAGED RT SIDE FRAME BS 178; FABRICATED A NEW REPLACEMENT FRAME; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 1-3.