As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT FLIGHT ATTENDANT REPORTED A STRONG ODOR IN AFT CABIN AFTER LANDING. TROUBLE SHOT ACFT IAW JOB CARD 26L00021001 & DETERMINED ODOR TO BE FROM APU. R & R APU IAW JOB CARD 26L31049005, OPERATIONS CHECKED GOOD. COMPLIED WITH DECONTAMINATION JOB CARD 26L00021004. R & R LT & RT PACK CONDENSER & RE HEATER IAW AMM 21-52-32, PB401 & 21-52-31, PB401 DUE TO CONTINUED ODOR AFTER TWO DECONTAMINATION ATTEMPTS. OPERATIONS & LEAK CHECKED GOOD.