As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT-COCKPIT HADALMOST NO AIRFLOW-RESULT OVERHEATED-RETU RNED TODEP AIRPORT. VALVE, FLOW CON OFF 31-2161-9-0002 2267 ON 31-2161-9-0002 1734 VALVE, FLOW CON OFF 31-2161-9-0002 2267 ON 0000 REMOVED AND REPLACED #1 PACK FLOW CONTROL VALVE REF AMM 21-51-51/401. OPS CHECK AND LEAK CHECK GOOD. PARTS USED: 31-2161-9-0002,QTY :1 PARTS USED: 31-2161-9-0002,QTY :1 ADD EMP:U416128 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1513882 SN OFF 2267