As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED VIBRATION B/W ROWS 7 AND 10 IN CABIN ALONG WITH A BURNING ODOR. MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT AND INSPECTED DUCTS FOR NR 2 PACK SYSTEM AND RAN THE PACK NR 2 SYSTEM PER EMB AMM, NO BURNING ODOR OR DEFECTS NOTED.