As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN COCKPIT FROM FCU AREA. CREW DECLARED AN EMERGENCY & RETURNED TO FIELD. FLIGHT LANDED WITHOUT INCIDENT & TAXIED TO THE GATE UNDER ITS OWN POWER. R & R FCU IAW AMM 22-81-12-0401. OPERATIONS CHECKED OK IAW AMM 22-10-00-0501. PERFORMED AFS & LAND TEST IAW AMM 22-96-00-0501 & 22-97-00-0501.