As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#393, BOS-DEN. 'NOISE AND VIBRATION IN FLOOR AR CRUISE BETWEEN ROWS 9-15 WITH THE HIGHEST LEVELS OBSERVED AT ROW 13. NOISE IS NO LONGER PRESENT WHEN INFLIGHT DID WALK WALK THROUGH PRIOR TO LANDING AND BELOW 10,520. NOISE REMAINED THROUGHOUT; PERFORMED GVI IAW A220 AMP 44-00-00. NO DEFECTS NOTED AT THIS TIME. A/C OK FOR CONTINUED SERVICE.'