What was found
OILY SMELL COMING FROM AIR CONDITIONING. APU INOPERATIVE DUE TO HISTORY OF OIL SMELL. ACCMP'D PACK BURNOUT AND REPLACED RECIRCULATION FILTERS. APU WAS A FULL RIP LSV AND JUST INSTALLED. CHECK FOR OIL IN BLEED DUCT. CHECK OIL LINE FROM OIL COOLER, LOP SWITCH, ETC. INCLUDE FINDINGS IN ACP W-U. (REPAIR OR REPLACE AS NEEDED) REMOVED BLEED DUCT. FOUND CLEAN NO OIL. WRENCH CKD ALL OIL LINES FOUND SECURED. APU OIL QTY FULL. RAN PACKS FOR APPROX 4 HRS. NO SMELL IN CABIN OR COCKPIT IAW TSM.