As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF CABIN PRESSURIZATION AT 33,000FT DESCENDED DOWN TO 10,000 AND DIVERTED TO TYS. CREW DEPLOYED OXYGEN MASKS AND HAD FIRE AND RESCUE TRUCKS ROLL IN TYS TO ASSIST PASSENGERS. EMERGENCY BRIDGELINE WAS OPENED BY OCC IN DAY AND BY MAINLINE IOC IN DFW. INTERROGATED MDC. FOUND B-1 CODES 006171 & 006172 IN SERVICE MESSAGE HISTORY. VISUALLY INSPECTED SAFETY VALVES NR 1 & 2. FOUND FOUR INSULATION BLANKETS TO BE INHIBITING PROPER VALVE OPERATION & BLANKETS DAMAGED.