What was found
FUME EVENT ON SHORT FINAL GOT WORSE WHEN GOING THROUGH SMALL CLOUD LAYER CLEARED BY THE TIME WE LANDED-REF TSM 05-50-00-810-831-A. APU VERIFIED NO LEAKS. PRE-CONDITIONED A/C W/, NO SMELL NOTED. ISOLATED PACKS 1&2, NO SMELL NOTED, RAN ENGINES & ISOLATED BLEEDS NO SMELL NOTED. ALL STEPS ACCOMPLISHED W/ AEROTRACER ON BOARD. REF AMM 21-61-00, 49-00-00, 71-00-00. A/C OK FOR SVC AT THIS TIME.