As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXCESSIVE FLIGHT DECK NOISE. RMV'D ALL CEILING PANELS & DIFFUSERS, MOST FWD & AFT ADAPTER ASSY & FLEX HOSES TO SIDEWALL DIFFUSERS. CLEANED SIDEWALL DIFFUSER OUTLETS AND FLEX HOSES IN FIRST CLASS AND COACH. REINSTALLED FLEX DUCTS 1 TO 24. INSTALLED FWD AND AFT ADAPTERS AND ALL DIFFUSERS EXCEPT AT SEAT ROW 10 AND 14. REMAINING FLEX DUCTS INSTALLED AND DIFFUSERS AT SEAT ROW 10 AND 14.