As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH AFT LAV AFT OTBD MOUNT FITTING HAS CORROSION AT FLOOR BEAM PARTS RACK. GROUNDED - YES. REMOVED DAMAGE IAW B737-900ER SRM 51-10-02. AFTER EVAL REMOVED MORE THAN 50% OF MAT, FOUND TO BE OUT OF LIMITS B737-900ER SRM 53-70-51-1A-1. DRILLED TO FIT NEW INTERCOSTEL STA 947-967 LBL 25 IAW BAC DWG 147A5650 REV B AND B737-900ER SRM 51-40-05 PART INSTALLED ON NON-ROUTINE 27940, CUST CARD NO G1923940.