As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AFT LAVATORY D (LEFT HAD SIDE) TOILET FLUSH VALVE IS STUCK OPENAND MAKING A LOUD AIR SUCTION NOISE. AFTER THIS STARTED ALL REMAINING LAVATORY TOILETS STOPPED WORKING. DIVERTED TO CLT. MAINTENANCE RESET FLUSH MOTOR SYSTEM, FLUSHED ALL TOILETS 3 TIMES, ALL TOILETS OPS CK GOOD IAW FIM 38-30-00.