As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1638, SDQ-SJU. "AIRPACK 1 REG FAULT DIRTY SOCK SMELL IN COCK PIT CABIN OK NO SMELL; PERFORMED LEVEL A DECONTAMINATION OF ECS ENVIROMENTAL CONTROL SYS REF AMM 21-000-00-615-802 AIRPACK 1 REG FAULT TRANSFER TO LOGPAGE 4290803-1 (REPLACED CONTROLLER PACK 1 PER TSM 21-61-00-810 AND NO ACTIVE FAULT BITE TEST PASS AND OPS CK IS NORMAL)