What was found
WALKED BOARDED THE AIRCRAFT AND INTO THE FLIGHT DECK, INSTANTLY SMELLED A METALLIC ODOR, APU INOPERATIVE ONLY GROUND AIR CONNECTED HAD GROUND AIR DISCONNECTED AND THE ODOR GOT WORSE TO THE POINT OF BEING ABLE TO TASTE IT. INSPECTED APU FOR OIL LEAKS IAW WC 4900-2001 NTF. CW MD 1424993. CREW DEBRIEF CW, MCC CONTACTED, CW REPORT/MCC CONTACTED CW, CW WC 0550-2002 STEPS 1-4 & MCC CONTACTED, CONTACTED MCC AND A/C RESULTS APU ON MEL MCC CONTACTED AND ENG 1&2 RAN. (LP: 7336888)