What was found
FUME/SMKE - ON TAXI IN WITH RT PACK ON, WET SOCK SMELL WITH VISIBLE FOG/SMOKE. CORRECTIVE ACTION: FOUND APU WITH NO OIL IN OIL TANK AND EXTENSIVE OIL CONTAMINATION IN BLEED DUCT. APU CHANGE COMPLETED AND BLEED DUCTS CLEANED. STILL HAVE ODOR AND HAZE ON APU BLEED. FOUND LT ACM AND BOTH PACK PRIMARY AND SECONDARY HEAT EXCHANGERS CONTAMINATED WITH OIL. REPLACED LT ACM AND PACK HEAT EXCHANGERS.(8145958)(AIRCRAFT GROUNDED)