As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#579, DCA-FLL. 'OILY DIRTY SOCK SMELL NOTED IN COCKPIT. DESCENDING THUR 9000FT. NO APU. UPON OPENING THE COCKPIT DOOR STRONG OILY SMELL WAS NOTED IN THE CABIN. REPORTED BY MULTIPLE CREW AND MAINT TECH. ( APU SYSTEM ).' (SUPPLEMENTAL WILL FOLLOW)