As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT WASTE TANK FAIL 4 OF 6 TOILETS FAILED TO FLUSH. PULLED AND RESET C/B R8 ON P11 OVERHEAD PANEL AND M1 ON THE P34 PNL. NO HELP. FOUND AFT TOILETS WASTE FULL, DUMPED SAME. ALL OPS OK. BITE CK OK. REPLACED AFT TANK WASTE TANK CONTROL BOX AND DUMPED ACETIC ACID IN ALL LAVS AS PRECAUTION SYS OPS OK. TANKS EMPTY.