As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ODOR IN CABIN. "SOCKS OR WET DOG" SMELL. SEEMS MORE PRONOUNCED AT SEA LEVEL, DENSE AIR. TRANSFERRING TO APU SEEMS TO INCREASE THE SMELL BUT IT MAY JUST BE THE HIGHER FLOW OF AIR. REMOVED AND REPLACED ACM DUE TO TORQUE CHECKS FAIL . OPS/LEAK CHECKS REQUIRED. ACM OPS/LEAK CHECKED GOOD. ALL MX COMPLETED IAW AMM CHAPTER 21-52-13.