As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SMOKE IN COCKPIT AND CABIN DURING FLIGHT, PASSENGERS HEARD METALLIC GRINDING NEAR ROW 11 AND SMELLED ELECTRICAL BURNING. DIVERTED AND LANDED WITHOUT INCIDENT. R & R THE NR 2 ACM, OPS TESTED WITH NO DEFECTS, AND ACFT APPROVED FOR RETURN TO SERVICE.