What was found
ETOPS - DURING PREFLIGHT WHOLE ENTIRE AIRCRAFT SMELLS BAD (SMELLS LIKE ROTTEN RUBBISH) AS TIME PROGRESS TENDS TO GET BETTER. PERFORMED TSM 05-05-00-810-829-A. NARROWED FROM APU. UPON FURTHER INSPECTION OF APU, FOUND OIL LEAKING FROM APU GEN. OIL WAS FOUND ON APU BLEED VALVE AND "V" BAND OF BLEED DUCTING. CLEANED "V" BANDS, APU DUCTING, AND BLEED VALVE OF OIL. REMOVED/REPLACED SHAFT SEAL, SEAL PLATE, & PACKING PER AMM 24-23-51. OPS/LEAK CHECK GOOD. PERFORMED LEVEL "A" DECON PER AMM 21-00-00-615-809-A. ODOR STILL LINGERING IN MAIN ENTRY, MID CABIN, AND COCKPIT. FOUND OIL LEAKING FROM FUEL DRAIN LINE. REMOVED & REPLACED FCU PERAMM 49-32-51. OPS & LEAK CHECK GOOD. PERFORMED LEVEL B MANUAL DECONTAMINATION OF ECS PER AMM 21-00-00-615-810-A. SMELL CHECK GOOD. OK FOR SVC.