As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT RECIRC FAN EXTREMELY NOISY. DEFERRED FOR LACK OF PARTS AT ORD. FOUND NEW STYLE FAN WITH RESTRICTOR PLATE INSTALLED. FAN FILTER REPLACED DUE TO BEING CLOGGED WITH DUST. DECIBLE READING WITH BOTH ENG'S RUNNING IS AT 10. THE RISER DUCTS ON THE FO'S SIDE MAKING LOAD RATTLING NOISE AND WILL NEED ESTIMATED 3 SHIFT SLOT FOR CLEANING. 3 SHIFT SLOT RQSTD. REPLACED RT RECIRC. FAN IAW MM. OPS CHECK GOOD IAW SERVICE TIP. PLACARD REMOVED.