As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT2250 - AIRCRAFT DEPARTED CLT WITH LEFT PACK ON MEL. ON CLIMB-OUT AT APPROXIMATELY 8,000 FEET, CREW LOST THE RIGHT PACK AS THE RIGHT PACK FAIL LIGHT ILLUMINATED. CREW WAS UNABLE TO PRESSURIZE THE AIRCRAFT AND DECIDED TO RETURN TO FIELD AT CLT WHERE THE FLIGHT LANDED WITHOUT FURTHER INCDIENT. NO EMEGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE PRECOOLER CONTROL VALVE. RIGHT PACK OPERATIONAL CHECK GOOD. PRESSURIZATION CHECK GOOD. (M)