As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE SKIN AROUND VACUUM LAV EXHAUST VENT AT FS917 IS CORRODED. GROUNDED - YES. DAMAGE FOUND TO BE OUT OF LIMITS CUT OUT DAMAGE AND REPAIRED SKIN IAW B737-900 SRM 53-70-01-2R-3 THIS IS A CAT B REPAIR WITH AN INSPECTION THRESHOLD OF 77,931 TOTAL FLIGHT CYCLES AND 5,000 CYCLE INTERVAL W=2 O=.125 R=.097 L=3 D=.028.