As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN COCKPIT, SUSPECTED LT PACK. ITEM WAS INITIALLY DEFERRED IAW MEL 21-51-01-01 CAT C NO FLY DATE 02-01-14, ACFT GNDED. INTEGRITY OF LT PACK SYS VERIFIED. APU & LT PACK SYS WERE RUN IAW AMM 49-11-00 & AMM 21-00-00. FAULT COULD NOT BE REPLICATED. OPERATIONS CHECKED GOOD. SYS ANALYSIS SUGGEST SMOKE WAS DUE TO PRE DEPARTURE DE-ICING OF ACFT.