As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERY LOW AIRFLOW FROM GASPERS ON THE GROUND AND INFLIGHT COULD NOT COOL THE CABIN BELOW 28'C WITH THE APU ON THE GROUND IN SEA OAT IN SEA 24'C WITH SUNSET. GROUNDED - YES. PERFORMED FIM 21-62 TASK 905.REMOVED AND REPLACED CABIN ZONE TEMP.SENSOR FILTERS AND PERFORMED OPS CHECK.OPS CHECK GOOD NO FURTHER DEFECTS NOTED AT THIS TIME ,OK FOR SERVICE.