As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMF - OIL ODOR REPORTED IN CABIN FROM LT AIR CONDITIONING PACK ON GROUND. PACK FAILS TO COOL CABIN. MAINTENANCE DEFERRED LT PACK PER MEL 21-50-2. MAINTENANCE SUBSEQUENTLY CLEARED THE PREVIOUS DEFERRAL WITH THE REPLACEMENT OF THE LT RAM AIR CHECK VALVE. LT PACK OPERATIONAL CHECK NORMAL. ACFT RETURNED TO SERVICE. (Z)