As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1022- HEAVY OIL ODOR IN CABIN WRITE UP. FOUND EVIDENCE OF OIL LEAKING FROM WITNESS DRAIN. ANOTHER ODOR EVENT OCCURRED ON JUNE 9 - APU MAKING OIL SMELL IN CABIN. REMOVED AND REPLACED APU PER JOB CARD 26L31049001. OPERATIONAL AND LEAK CHECKED GOOD. WITNESS DRAIN EXHIBITED OIL RESIDUE CONSISTENT WITH LEAKING LOAD COMPRESSOR SEAL. VENDOR COMPLIED WITH SERVICE BULLETIN FOR UPGRADED L/C SEAL.