As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND LAV SUPPORT RBL 20 BETWEEN STA 947 AND 967 TO BE CORRODED WHERE MOUNT SITS. GROUNDED - YES. REMOVED CORROSION & FOUND OUT OF LIMITS IAW BOEING 737-900ER SRM 53-70-51-1A-1. REMOVED & REPLACED LAV MOUNT SUPPORT INTERCOSTAL IAW 737-900ER SRM 51-40-02-0G-0 STEP 7, 51-40-05-0G-0 STEP 4 (W= .580 O= .210 R= .160 L= .600 D= .050).