As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL - INFLIGHT ORD-TUS. CREW REPORTED LEFT PACK FAILED ON CLIMBOUT. FLIGHT DIVERTED STL LANDED WITHOUT INCIDENT. FOUND CLAMP LOOSE FOR BOOT AT LEFT FORWARD HEAT EXCHANGER OUTLET. REPOSITIONED DUCT AND SECURED BOOT AT LEFT FORWARD HEAT EXCHANGER OUTLET. SYSTEM GROUND CHECK NORMAL OPERATION.