As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE PORTION OF FLIGHT AT ALTITUDE 39,000 FT. FLIGHT CREW EXPERIENCED CABIN DECOMPRESSION, DONNED THEIR OXYGEN MASKS, DECLARED EMERGENCY, AND DIVERTED FROM DESTINATION TO KLBB. FAILURE OF CABIN PRESSURIZATION MIXER DUCT 25-8VF561-1A AND RUBBER COUPLING OCCURRED THAT VENTS CABIN PRESSURIZATION TO AMBIENT AIR. AIRCRAFT LANDED SAFELY AT LBB WITH NO INJURIES NOTED. FAILURE WAS SAME AS NOTED IN FAA SAIB CE-20-10