Eastern Air Lines Flight 512 was a scheduled domestic passenger flight from Charlotte, North Carolina, to New York City that crashed on November 30, 1962, killing 25 of the 51 people on board. The aircraft, a Douglas DC-7B operated by Eastern Air Lines, crashed at Idlewild Airport in heavy fog while attempting to perform a go-around. One of the plane's wings struck the ground and the plane crashed into soft sand in a marsh about from the runway, where it burst into flames. Emergency crews responded, but rescuers were delayed by the thick fog and the soft terrain. An investigation launched after the crash found that the probable cause of the accident was that the pilots had made critical mistakes during the go-around that prevented the aircraft from gaining altitude. Accident The flight left Charlotte Municipal Airport at 7:41p.m. Eastern Standard time en route to Idlewild Airport in New York City. Federal Aviation Agency (FAA) notifications had made the crew aware that the precision approach radar system at the airport was out of service. The weather forecast called for clear skies or scattered clouds. While the flight was en route, patches of ground fog started developing at Idlewild. At 8:57p.m., the pilots were advised that there would be a delay of an undetermined length due to the fog. The flight entered a holding pattern until 9:33p.m. when it was instructed to enter the approach path to runway 4R. Other aircraft landing ahead of the flight reported dense fog at ground level with extremely low visibility; pilots of one flight that had been cleared to take off requested a delay because the fog was too dense for safe operation. Runway visual range instruments in the United States Weather Bureau office at the airport recorded visibility that had dropped to virtually zero shortly before the instruments failed completely, but this information was not communicated to the tower personnel. As a result, the pilots of inbound aircraft were not made aware of the reduced visibility. Instead, the tower reported visibility of , although flight crews would have likely heard radio traffic from other pilots describing the poor conditions. Rules that were in effect at the airport required a visibility of at least for a runway to remain open. As Flight 512 approached the runway, the pilots descended to as low as above the ground, about beyond the touchdown point on the runway. At