As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1558, BOG-FLL .' INFLIGHT COMPLAINED ABOUT DIRTY SOCKS SMELL AT 18K TILL LANDING. THE FLIGHT CREW DIDN'T EXPERIENCE IT; INSPECTED A/C AND FOUND THE LEVEL TO BE LEVEL A. PERFORM TSM 05-50-00-810-831-A AND IDENTIFIED THE SOURCE OF ODOR TO BE APU. PERFORMED ECS DECONTAMINATION IN STEP WITH 2017-T015I AND AMM 21-00-00-615-802. NO ODOR PRESENT DURING PACK OPERATION .'