The aircraft arrived at Ciudad Trujillo on the morning of 16 August with the no. 2 engine inoperative. It was decided to continue to New York via Miami on just three engines. Carrying only the crew, the Super Constellation took off at 15:16 GMT with the no. 2 propeller feathered. Some 50 minutes later, the no. 4 prop oversped. The flight crew were not able to control or feather the propeller and ultimately the prop tore free and damaged the no. 3 propeller as it parted. The no. 3 prop was feathered; only the no. 1 engine remained operative now. Ciudad Trujillo could not be reached, forcing the crew to ditch the aircraft parallel to the coast at about 500 m offshore. The aircraft sank to a depth of about 40 feet. PROBABLE CAUSE: “Due to the fact that three of its engines were inoperative, the aircraft had to be ditched in the sea.”