As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNUSUALLY LOUD CABIN NOISE NEAR ROW 10. RT CNTR AIR DUCT SUPPORT BRACKETS ARE SHEARED, AIR DUCT IS SAGGING DOWN. REMOVED CEILING PANELS & AIR LOUVERS FROM RT ROW 9 THROUGH 10. REMOVED RT CURTAIN & TRACK, REMOVED PLENUM ASSEMBLY IAW 214W2124-16. REPLACED DAMAGED SUPPORT ANGLES.