What was found
ON FLIGHT 4371, CREW REPORTED ABNORMAL SMELL IN THE COCKPIT ON CLIMB-OUT FROM, ODOR WAS INTERMITTENT SMELLED LIKE A COMBINATION DIRTY SOCK AND CHEMICAL. CREW PERFORMED APPROPRIATE PROCEDURE IN AOM 1 DECLARED PRECAUTIONARY (NOT AN EMERGENCY). RETURNED TO MDT. ALSO, LATER GOT PACK 1 OVLD AND PACK 1 OVHT AIRCRAFT REMOVED FROM SERVICE. PERFORMED OPERATIONAL CHECK OF PACK SYSTEM IAW EMB 145 AMM 21-31-00-700-802. NOTED DIRTY SOCK SMELL WHILE RUNNING NR 1 PACK ALSO RECEIVED PACK 1 OVLD MESSAGE MEL'D NR 1 PACK PER MEL 21-29 AUTH 031085D-C. AIRCRAFT RETURNED TO SERVICE.