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. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)