What was found
AIR CONDITIONING HAS A UNPLEASENT ODOR. ACCOMPLISHED MM 49-16-11-200-801, REMOVED MIDDLE DRAIN LINE AND DRAIN LINE FROM APU LOAD COMPRESSOR CASE. FOUND OIL IN MIDDLE DRAIN BEFORE RUNNING APU, CLEANED DRAINS. RAN APU FOR MINIMUM OF 5 MINUTES FOUND OIL ACCUMULATION AT MIDDLE DRAIN. RECONNECTED MIDDLE APU DRAIN AND DRAIN LINE FROM APU LOAD COMPRESSOR CASE. REMOVED AND REPLACED APU. ACCOMPLISHED OIL CONTAMINATION REMOVAL FROM AIR CONDITIONING AND PNEUMATIC SYSTEM . REF MM 21-00-01-100-801