As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WHILE AT CRUISE PRIOR TO TOP OF DESCENT. FA REPORTED DIRTY SOCK ODOR IN AFT GALLEY AFTER TOP OF DESCENT AND POWER REDUCTION THE ODOR SMELLED IN THE FLIGHT DECK. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **ORIGINAL REPORT WAS AALA202208108429** REPLACED APU OIL COOLING FAN PER AMM 49-91-51. ALSO REPLACED THE APU OIL COOLER PER AMM 49-91-44. (AALA202208243124) A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED.