As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: CORROSION LEFT UPPER TEE FITTING MAIN CABIN FLOOR STA. 947 LBL 25 UNDER AND AROUND LAVATORY MOUNT. MAINTENANCE FABRICATED LOCATED AND DRILLED AND INSTALLED -1 T-CAP SECTION, -2 ANGLES AND (4EA) -3 STRAPS (4EA) AT FLOOR BEAM STA 947.5 BETWEEN APROX LBL1 TO LBL44 IAW B737NG SRM 53-70-51-2R-5