As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OILY ODOR COMING FROM AIR SYS. REMOVED APU FROM AIRCRAFT. INSTALLED REPAIRED APU. ALL OPS & LEAK CHECKED GOOD. CLOSED ALL ACCESS. WORK DONE IAW MM 49-10-00. REMOVED & REPLACED BOTH LT & RT COALESCER SOCKS. OPS & LEAK CHECKS GOOD IAW MM 12-20-01. COMPLIED WITH ENVIROMENTAL CONTROL SYSTEM DUCT BURN OUT IAW FORM TC-750-21-120801M, R1.