What was found
ODOR - APU PLACED ON MEL FOR SMOKE/FUME EVENT AND REQUIRES APU WASH. PERFORMED W/C 4916-2001 AND W/C 4900-2001. CLEANED AND INSPECTED APU REF W/C 4916-2001, CONTAMINATION NOTED AT APU AIR INTAKE AND PLENUM BEFORE CLEANING. RAN APU AFTER CLEANING FOR 20 MINUTES . NO NEW CONTAMINATION NOTED AT AIR INTAKE, NO CONTAMINATION NOTED INSIDE BLEED AIR DUCT. DISCONNECTED LOAD COMPRESSOR DRAIN LINE PER W/C 4900-2001, OIL CONTAMINATION FOUND IN DRAIN LINE. PER WORK CARD APU REPLACEMENT WILL BE REQUIRED. REAPPLIED M PROCEDURES, APU TO CONTINUE ON MEL 49-10-01A. (LP: 9109081, AIRCRAFT WAS GROUNDED)