As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING DESCENT AT APPROXIMATELY 4000 FEET IN IDLE TRUST WITH HP BLEED VALVES OPEN, A SWEATY SOCKS SMELL CAME OUT OF THE AIR VENTS OVERHEAD AND ON THE INSTRUMENT PANEL OF THE FLIGHT DECK. TWO FLIGHT ATTENDANTS AT THE REAR OF THE AIRCRAFT ALSO SMELLED IT. SMELL DISSIPATED AND WAS GONE BY THE TIME WE PARKED. **SUPPLEMENTAL REPORT WILL BE SUBMITTED (OPEN)**