As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#51, BOS-MCO. 'DURING DESCENT ON FINAL APPR WE EXPERIENCED A FUME EVENT(DIRTY SOCK ODOR) APPROX 4000 FT ODOR REMAINED DUIRING TAXI IN. IT WENT AWAY AFTER APU WAS STARTED; PERFORMED LEVEL B REMOVED OF CONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER AMM 21-00-00-615-803-A. NO FURTHER ODOR FOUND OK FOR CONTINUED SERVICE.'