What was found
AT FL29000 MAIN CARGO VENT DOOR LIGHT ILLUMINATED. CABIN LOST PRESSURE AND EMERGENCY DESCENT WAS INITIATED. ADJ DOOR LIMIT SWITCH, CAM LATCH ROD ASSY AND OPS CHECK VENT DOOR IAW MM 52-30-00, DC 8 VENT DOOR MANUAL. INSPECTED ALL FITTINGS AND ATTACHMENTS, NO DEFECTS NOTED.