As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 629, RETURNED TO FIELD. DIRTY SOCK SMELL DURING TAKE OFF THRU 11000FT THEN STARTED TO DISSIPATE. SMELL STARTED AGAIN DURING APPROACH TO LANDING. EVIDENCE OF OIL LEAK AT APU LOAD COMPRESSOR DRAIN. R & R APU OPS & LEAK CHECK OK REF AMM 49-11-11 AIRCRAFT IS OK FOR SERVICE.