What was found
FUME EVENT ON DESCENT. -SEEMS ASSOCIATED WITH PACK 1. PERFORMED TSM 05-50-00-810-831-A, NO APU OIL LEAK FOUND, NO ENGINE OIL LEAK FOUND. OPERATED PACKS WITH ENG BLEED AIR & APU BLEED AIR UNABLE TO DUPLICATED FAULT ON GROUND A/C OK FOR SVC.