As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - CREW REPORTED ON CLIMBOUT RIGHT PACK FAILED WITH LEFT PACK ON PLACARD FOLLOWED BY TAIL COMPARTMENT HIGH TEMPERATURE LIGHT. EMERGENCY DECLARED FLIGHT RETURNED LAX LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED O-RING AND INSTALLED DUCT CLAMP ON RIGHT WATER SEPARATOR ASSEMBLY. SYSTEM GROUND CHECK NORMAL OPERATION.