As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA'S REPORTED DIRTY SOCK/MUSTY SMELL ODOR THROUGHOUT CABIN FROM TOP OF DESCENT TO TOUCH DOWN. NOTHING DETECTED IN COCKPIT. FOUND INTAKE AREA CONTAMINATED WITH OIL AND EVIDENCE COMING FROM COMPRESSOR. APU TO BE REPLACED. (LP 7781906, 7781907)