As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POSSIBLE FUME EVENT JUST BEFORE LANDING -PERFORMED OF THE CAUSE OF CABIN ODORS IAW TSM 05-50-00-810-831-A. PERFORMED APU TSM 49-00-00-810-921-A. RAN APU FOUND TO BE THE SOURCE. PERFORMED BOTH ENG #1 & #2 IAW AMM 70-00-00. NO EVIDENCE OF ODOR AT THIS TIME. A/C OK FOR CONTINUED SVC.