As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS CABIN ODOR BEGAN AFTER TAKEOFF SEEMED TO DISSIPATE DURING CLIMB OUT AND AT CRUISE ODOR RETURNED PASSING THRU APPROXIMATELY 11000 FT, SEEMED STRONGER DESCRIBED AS DIRTY SOCK SOUR MILK SMELL. MAINTENANCE ACCOMPLISHED JOB CARD 05-96-70, FOUND CABIN ODOR TO BE CAUSED BY LH ENGINE COMPRESSOR OIL LEAK. MAINTENANCE CHANGED #1 ENGINE ON JOB CARD 71-94-01. NO FURTHER ODORS NOTED.