As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT PASSENGERS IN EXIT ROWS BOTH SIDES REPORTED HEARING A SLAPPING SOUND WITH FEELING AT THEIR FEET NOTHING ABNORMAL OBSERVED FROM COCKPIT. REMOVED AND REPLACED INTERCOSTAL, CHANNEL SUPPORT AND AFT T-BRACKET PER AMM 53-51. INSTALLED NEW PANEL AT 194E PER AMM 53-51.