As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT HAD DEPRESSURIZATION DURING CRUISE. RECIRCULATION DUCT FOUND DISCONNECTED IN THE AFT EQUIPMENT BAY. CLAMP SHELL WAS FOUND SEPARATED FROM THE DUCT. RECIRCULATION DUCT WAS RE ASSEMBLED AND THE CLAMP ATTACHED AND SECURED. PRESSURISATION RUNS COMPLETED WITHOUT FAULT.