As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG OZONE ODOR FROM APU BLEED AFTER START UP UPON LANDING. PERFORMED T/S IAW W/C. # 0550-2001 NO FINDINGS THEN C/W 0550- 2003 NO FINDINGS ALSO DUE TO RECENT DUEL ENG W/W SUSPECTED AS CAUSE REF LOG # 0873410 FOR NO GO ODI PREVENTION A/C OK FOR SVC