Interesting tidbit:
This was Captain Alva Marsh's third crash at LaGuardia.
The first was on January 14, 1952. His Convair 240 which ended up landing in Flushing Bay 3,600 feet from the approach end of the runway. The copilot was flying, but the Civil Aeronautics Board investigation found that the probable cause was "failure of the captain in command to monitor the copilot's approach and take corrective action when the aircraft first went below a normal approach path."
The second was on February 6, 1953. His Convair 240 went out of control and crashed on runway 13. In this crash the CAB investigation found that: "the probable cause of this accident was loss of control of the aircraft during final approach due to high drag from the right propeller. This drag was induced by the right propeller blades moving beyond the high r.p.m. limit stop since the blades were found in approximately zero geometric pitch."
The third was this crash on February 1, 1957. The CAB investigation found that "the probable cause of the accident was the failure of the captain to (1) properly observe and interpret his flight instruments and (2) maintain control of his aircraft." This was Alva Marsh's last crash. He never flew an airliner again. He was given a desk job at Northeast as an assistant to the airline's Operations Manager.