As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OKC - INFLIGHT DFW-SEA. CREW REPORTED LOUD BANG FROM CABIN THEN LOSS OF PRESSURIZATION. NO MASKS WERE DEPLOYED. EMERGENCY DECLARED DIVERTED OKC LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND LEAK COMING FROM AFT AUXILIARY TANK BOOT. FLIGHT FERRIED TO TUL TO REPLACE AFT AUXILIARY TANK BOOT. SYSTEM GROUND CHECKED NORMAL OPERATION.