As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NONE OF THE LAVATORY’S ON TANK 3 WORK. THEY ARE 3R FWD, 2R OTBD & 4L OTBD. CONFIRMED NO FLUSH VLVS STUCK OPEN. RAN ALL TEST ON CSCP & FOUND MESSAGE 38-21040. ACCOMPLISHED FIM TEST 38-30 TASK 813. REPLACED BOTH TANK POINT LEVEL SENSORS ON TANK 3 IAW MM 38-33-01, OPERATIONS CHECKED NORMAL.