As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, CREW NOTED L PACK HOT IN AUTO AND OKAY IN STANDBY. ODOR AND VISIBLE SMOKE IN AUTO. MAINTENANCE COULD NOT DUPLICATE SMOKE OR ODOR. RAN PACK AND CHANGED THE LT PACK MIX MANIFOLD SENSOR. OPERATIONAL CHECK NORMAL (2010-D0882)(DL757101941).