a Lockheed Constellation in flight over Port Washington, New York, a Cessna 140 single-engined airplane crashed into his plane. The two occupants of the Cessna were killed, but Captain Knuth was able to land safely with no injuries to his crew or passengers. The first officer was John R. Dale, 48, also of Long Island. He had a total of 13,963 hours of flying time, of which 2,681 were in the Boeing 707. The second officer was Paul L. Orringer, age 42, of New Rochelle, New York. He had 10,008 hours of flying experience, including 2,808 in Boeing 707 aircraft. The flight engineer was John R. Kantlehner of Long Island. He had a total flying time of 6,066 hours, including 76 hours in the Boeing 707. Investigation The CAB assigned more than a dozen investigators within an hour of the crash. The CAB team was assisted by investigators from the Boeing Company, Pan Am, the Air Line Pilots Association, Pratt & Whitney, the Federal Bureau of Investigation, and the Federal Aviation Agency (FAA). The costs of the CAB's investigations rarely exceeded $10,000, but the agency would spend about $125,000 investigating this crash (), not including the money spent by Boeing, the FAA, Pratt & Whitney, and other aircraft-part suppliers during additional investigations. Initial theories of the cause of the crash focused on the possibility that the plane had experienced severe turbulence in flight that caused a fuel tank or fuel line to rupture, leading to an in-flight fire from leaking fuel. U.S. House Representative Samuel S. Stratton of Schenectady, New York, sent a telegram to the FAA urging them to restrict jet operations in turbulent weather, but the FAA responded that it saw no pattern that suggested the need for such restrictions, and Boeing concurred. Other theories included sabotage or lightning, but by nightfall after the first day, investigators had not found evidence of either. Some speculation arose that metal fatigue as a result of the aircraft's 1959 incident could be a factor, but the aircraft had undergone four separate maintenance overhauls since the accident without any issues having been detected. Investigators rapidly located the flight data recorder, but it was badly damaged in the crash. Built to withstand an impact 100 times as strong as the force of gravity (g), it had been subjected to a force of 200 g, and its tape appeared to be hopelessly damaged. CAB