What was found
AT FL340, HAS EICAS MSG, MAIN CARGO DOOR. COMPLIED WITH QRH. DESCENT TO 10,000 FT RTB KIND. MAIN DECK CARGO DOOR INDICATION SYS INOPERATIVE. VERIFY & RECORD IN AML & EAML THAT MAIN DECK CARGO DOOR IS CLOSED, LATCHED & LOCKED BEFORE EACH DEPARTURE. ACFT OK FOR SERVICE. CREW COMMENTS, MAIN CARGO DOOR MSG EXTINGUISHED ON DESCENT & STAYED OUT WHILE ON GND. CHECKED & VERIFIED DOOR IAW MEL. OK TO CONTINUE. R & R PSEU IAW AMM 32-09-04-4. BITE TEST IAW SUB TASK 32-09-04-714-015. NO FAULTS NOTED. CARGO DOOR ANNUNCIATOR LIGHT ON P5 PANEL INDICATES NORMAL. PLACARD REMOVED. ACFT OK TO CONTINUE.