What was found
DIRTY SOCK SMELL AT IDLE POWER ON DOWNWARD/BASE INTO ATL. CONFIRMED W/FA DISSIPATED ONCE ENGINES SPOOLED BACK UP. DID NOT SMELL AT HIGHER ALTITUDES ON DESCENT. CORRECTIVE ACTION: OPERATED BOTH ENGINES. PACKS AND APU, DETECTED SLIGHT ODOR WHILE RUNNING NR 1 ENGINE AND PACK 1 INSPECTED ENGINE HP DUCTING NO OIL/RESIDUE PRESENT. INSPECTED NR 1 ACM DUCTING NO OIL/ RESIDUE PRESENT. FOUND GREEN SYSTEM HYD RESERVOIR OVERSERVICED. DRAINED APPROXIMATELY 1.5 QTS FROM RESERVOIR. OPENED CRANKPAD & BORESCOPE PLUGS S1 & S2. C/W BSI, PER A319-20-21 M/M 71-00. NO RESTRICTIVE ITEMS FOUND. INSTALLED BORESCOPE PLUGS S1 & S2 & CRANKPAD COVER, PER A319 AMM 72-31. C/W W/C 7900-2001 FOR LT ENGINE, PER DECISION TABLE ON W/C 0550-2002. NO CONTAMINATION FOUND. NO ECS DECONTAMINATION NECESSARY. INSPECT APU AREA. NO DEFECTS NOTED.