As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DUCT FROM WATER SEPERATOR SOCK IN AFT EQUIPMENT BAY DISCONNECTED FROM SEPERATOR. CABIN DEPRESSURIZEDAND AIRCRAFT DECENDED AND RETURNED TO BASE. DUCTS AND CLAMPS WERE INSPECTED AND AFTER RE-INSTALLATION AIRCRAFT WAS RUN TO MAX DIFF ON RAMP USING APU. NO LEAKS NOTED AND AIRCRAFT WAS RETURNED TO SERVICE.