What was found
CAPTS EMERGENCY AUTHORITY USED TO OPERATE PACK 1 DUE TO FAILURE OF PACK 2 TO COOL AC. PACK 2 WEAK AIRFLOW AND OUTLET TEMP (REPORTED BY CREW) ACTUAL CAUSE NEVER DETERMINED. ALL TESTS PERFORMED ON BOTH PACKS ON GROUND WERE NORMAL. COULD NOT DUPLICATE ON GROUND. REPORT: PACK 2 UNABLE TO COOL CABIN. COMPRESSOR OUTLET TEMP 115 PACK OUTLET TEMP 15. POST FLIGHT, NO FAULTS. BITE CK NO FAULTS. OP CK BOTH PACKS,TEMP INDICATIONS SAME ON GRND . VISUAL INSP CK OK.