As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED A DIRTY SOCK SMELL IN AFT PORTION OF AIRCRAFT ON DESCENT. APU STARTER LEAKING. REPLACED DAMAGED O-RING FOR APU STARTER MOTOR PER AMM 49-42-51-04-01. FUNCTIONAL CHECKED OK. LEAK CHECKED GOOD. AIRCRAFT WAS GROUNDED.