As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE INSTALLATION OF FLOOR REPAIR OUTSIDE THE FLIGHT DECK; FOUND INTERCOASTAL CRACKED BETWEEN STA. 270 TO STA. 291 AT BL0. / REMOVED OLD PART IAW 737 SRM 51-40-02-0G-0. VERIFIED NEW PART IAW BOEING DOCUMENT # 141A5400; REV-. PART#141A5410-3. DRILLED UP NEW PART IAW 737 SRM 51-40-05-0G-0. INSTALED NEW PART IAW 737 SRM 51-40-02-0G-0. 'A' TAG# WN752?