What was found
WHILE LOADING BAGGAGE, THE CARGO DOOR CLOSED AND WAS STUCK CLOSED WHILE A PERSON WAS INSIDE THE CARGO BAY. THE A/C WAS OPERATING UNDER MEL 52-31-01-00 (CARGO BALANCE SPRING MEL) ON-CALL MX RESPONDED BUT PERSONNEL WAS REMOVED BEFORE ARRIVAL. ***AIRCRAFT REMOVED FROM SERVICE*** R&R CARGO DOOR BALANCE SPRING ASSEMBLY FOR BOTH CABLES IAW AWAC SUP 11-025A. OPS CHECKS GOOD, AC OK FOR RTS PN: 601R35218-4 S/N OFF: 55862 S/N ON: 56834 SMG PN: 601R35218-4 S/N OFF: 56765 S/N ON: 56728 SMG