As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT INTO SNA ON APPROACH, FUME EVENT-REF TSM 05-50-00-810-831-A ON APU FOUND OIL CONTAMINATION ON INLET PREFORMED DECONTAMINATION LEVEL A USING ENGINE BLEED IAW AMM 21-00-00-615-402-A NO ODOR ON PACK 2 PACK 1 AND APU DEFER SEE LP 3593764-1