As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"ATB" WASTE WATER DOOR NOT CLOSED, UPON ACFT ARRIVAL TO GATE, FOUND WASTE SERVICE PANEL AFT LATCH OPEN. INSPECTED BOTH LATCHES FOR PROPER OPERATION FOUND NO DEFECT. INSPECTED WASTE SERVICE PANEL AND HINGE NO DEFECTS NOTED. CLOSED PANEL AND SECURED LATCHES OK TO CONTINUE.