What was found
DURING CLIMB, LEVELING AT FL 360. AN EICAS MESSAGE FOR THE MAIN CARGO DOOR DISPLAYED. ON THE CARGO DOOR PANEL VISIBLE FROM THE CAPTAIN'S SEAT, NO LIGHTS WERE ILLUMINATED. EXECUTED QRH PROCEDURES WITH DESCENT TO 10,000. AT FL 180 THE EICAS MESSAGE STILL SHOWED, EICAS CLEARED ABOUT 10,000 FT.