As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#379, DCA-FLL. 'DIRTY SOCK SMELL REPORTED BY FLIGHT ATTENDANT; COMPLIED WITH INFO NOTICE 2017-T015-J. NO 30-DAY HISTORY. PER TSM 05-50-00-810-085-B ODOR TYPE 1 LEVEL A. FOUND THE SOURCE OF ODOR TO BE APU OIL COOLING FAN LEAKING. ACCOMPLISHED LEVEL 1 ECS DECON. NO ODOR WAS DETECTED. REFER TO L/P 3493276-1 FOR APU MEL. AIRCRAFT OK FOR SERVICE.