As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLIGHT ATTENDANTS REPORTED AN ODOR / DIRTY SOCK SMELL IN THE CABIN. MAINTENANCE ISOLATED THE ODOR TO THE APU RUNNING. OIL WAS FOUND ON THE APU TURBINE BLADES. MAINTENANCE REMOVED AND REPLACED THE APU ASSEMBLY PER JOB CARD 03L70349006 ALONG WITH THE APU EXHAUST DUCT PER MM 49-81-11-404. APU PERFORMANCE CHECK OK PER JOB CARD 03L70349007.