As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSING 3000 FT, FA CALLED AND REPORTED A MUSKY ODOR. NO ODOR WAS NOTICED IN THE COCKPIT. THIS OCCURED APROXIMATELY 3 MINUTES PRIOR TO LANDING. FOLLOWED TSM IAW 05-50-00/21-00-00 FOR CABN ODOR WAS NOT ABLE TO DUPLICATE OCCURANCE. PERFORMED DECONTAMINATION OF THE ENVIROMENTAL CONTOL SYSTEM IAW AMM 21-00-00. REMOVED AND REPLACED RECIRCULATION FILTER IAW AMM 21-21-41. NO FURTHER ACTION REQUIRED.