As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: INBOUND CABIN CREW REPORTED A DIRTY SOCK / ROTTEN EGG SMELL ON DEPARTURE AND ARRIVAL BELOW 10K FEET. MAINTENANCE FOUND THE APU OIL LUBE MODULE LEAKING AND REPLACED IT PER AMM 49-91-45. A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM WAS ACCOMPLISHED PER TASK CARD 26L00021014 ALONG WITH A SATISFACTORY OPS & LEAK CHECK WITH NO ODORS NOTED.