What was found
PASSING THROUGH 7K' MSLON APPROACH INTO ATL, HAD A DIRTY SOCK SMELL IN FLIGHT DECK. FA AT DOOR 1 DID NOT SDMELL ANYTHING IN CABIN, FA AT DOOOR 3 SAID HE COULD SMELL IT. DESCENDING THROUGH 1K' MSL, ODOR DISSIPATED. FA AT DOOR 3 SAID BURNING SMELL AT ROW 19-23, IT WENT AWAY DURING ROLLOUT. T/S PER AMDS CARD 0550-2002. FOUND APU OIL LEAK INTERNALLY. R/R APU ON AMDS CARD 4900-9002. C/W STEPS A-E OF MD LOG. (LP# 0014901, 4585498)