What was found
SFO - RT AIR COND PACK FAIL LIGHT INDICTION REPORTED AFTER DEPARTURE. SMOKE ODOR REPORTED IN CABIN. A/C RETURNED TO STATION WITHOUT INCIDENT. MX FOUND RIGHT PACK FROZEN WITH ICE. DEFERRED RIGHT PACK PER MEL 21-50-2. A/C RETURNED TO SERVICE. MX SUBSEQUENTLY CLEARED DEFERRAL AS UNABLE TO DUPLICATE REPORTED DISCREPANCY. AIR COND SYSTEM OPERATIONALLY CHECKS NORMAL IN AUTO AND MANUAL MODES. (M)