As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING CLIMB OUT FLIGHT ATTENDANT IN AFT CABIN SMELLED STRONG ODOR. THE DIRTY SOCK SMELL. THE SMELL DISSIPATED WITHIN 5 MINUTES. FORWARD FLIGHT ATTENDANT HAD FAINT LITTLE SMELL. APU WAS OFF FOR TAKEOFF. THE ODOR WAS ALSO PRESENT ON THE DESCENT. IN THE CABIN AND COCKPIT. DIRTY SOCK SMELL VERY STRONG. MAINTENANCE FOUND OIL AT THE APU INLET PLENUM AND DETERMINED THAT THE APU WAS THE SOURCE OF THE ODOR. (OPEN)