As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AND FUMES VISIBLE FROM GASPERS IN FLIGHT DECK, RESIDUE FROM SMOKE IN FLIGHT DECK ALSO SEEN IN FWD CABIN FUMES LASTED FOR 4 TO 5 MINUTES. INSPECTED AND FOUND LT PACK TO BE MAKING MECHANICAL GRINDING NOISE. RAN ENGINES WITH CREW TO CONFIRM NO FURTHER ODORS OR SMOKE. DEFERRED LH PACK ON OCN 70018555 PER MEL 21-51-01B-2 CAT C