What was found
DISCREPANCY: REFERENCE LP210042 ITEM 1: FUME EVENT @ GATE WITH APU RUNNING, BLEEDS ON, PACKS ON. JUST GOT TO PLANE. CORRECTIVE ACTION:LP210042 ITEM 1PER TSM 05-50-00-810-831-A FOUND APU STARTER LEAKING OIL. PERFORMED OPS CHECK OF APU IAW AMM 49-00-00-710-10-A. OPS CHECKED GOOD NO DEFECTS NOTED. DISCREPANCY: LP210042 ITEM #3:SEE LP210042 ITEM 1 UPON REMOVAL OF THE APU STARTER FOUND A BROKEN O-RING CORRECTIVE ACTION: REMOVED AND REPLACE APU STARTER O-RING IAW AMM 49-42-41-000-006-A/400-006-A. NO LEAKS NOTED AT THIS TIME. TW: STS 3470 DD: 13 JAN 23.