Korean Air Lines Flight 007 (also known as KAL007 and KE007) was a scheduled Korean Air Lines flight from New York City to Seoul via Anchorage, Alaska. On September 1, 1983, the South Korean airliner serving the flight was shot down by a Soviet Su-15 interceptor. The Boeing 747 airliner was en route from Anchorage to Seoul, but deviated from its original planned route and flew through Soviet prohibited airspace around the time of a U.S. aerial reconnaissance mission. The Soviet Air Defence Forces treated the unidentified aircraft as an intruding U.S. spy plane, and proceeded to destroy it with air-to-air missiles, after firing warning shots which were likely not seen by the KAL pilots. The Korean airliner eventually crashed in the sea near Moneron Island west of Sakhalin in the Sea of Japan. All 269 passengers and crew aboard were killed, including Larry McDonald, a Representative from Georgia in the United States House of Representatives. The Soviets found the wreckage under the sea on September 15, and found the in-flight recorders in October, but this information was kept secret until 1993. The Soviet Union initially denied knowledge of the incident, but later admitted shooting down the aircraft, claiming that it was on a MASINT spy mission. The Politburo of the Communist Party of the Soviet Union said it was a deliberate provocation by the United States to test the Soviet Union's military preparedness, or even to provoke a war. The White House accused the Soviet Union of obstructing search and rescue operations. The Soviet Armed Forces suppressed evidence sought by the International Civil Aviation Organization (ICAO) investigation, such as the flight data recorders, which were released eight years later, after the dissolution of the Soviet Union. The incident was one of the most tense moments of the Cold War and resulted in an escalation of anti-Soviet sentiment, particularly in the United States. The opposing points of view on the incident were never fully resolved; consequently, several groups continue to dispute official reports and offer alternative theories of the event. The subsequent release of Korean Air Lines Flight 007 transcripts and flight recorders by the Russian Federation has clarified some details. As a result of the incident the United States altered tracking procedures for aircraft departing from Alaska. The interface of the autopilot used on airliners was redesigned to make it more ergonomic. In addition, the event was one of the most important single events that prompted the Reagan administration to allow worldwide access to the United States Global Positioning System (GPS). The aircraft flying as Korean Air Lines Flight 007 was a commercial Boeing 747-230B. The jet first flew on January 28, 1972, and was delivered on March 17, 1972, with the serial number CN20559/186 and registration HL7442 (formerly D-ABYH. operated by Condor). The aircraft departed Gate 15 of John F. Kennedy International Airport, New York City on August 30, 1983, bound for Gimpo International Airport in Gangseo District, Seoul, 35 minutes behind its scheduled departure time of 23:50 EDT (03:50 UTC, August 31). The flight was carrying 246 passengers and 23 crew members. After refueling at Anchorage International Airport in Anchorage, Alaska, the aircraft, piloted on this leg of the journey by Captain Chun Byung-in, First officer Son Dong-hui and Flight Engineer Kim Eui-dong. departed for Seoul at 04:00 AHDT (13:00 UTC) on August 31, 1983. The aircrew had an unusually high ratio of crew to passengers, as six deadheading crew were on board. Twelve passengers occupied the upper deck first class, while in business almost all of 24 seats were taken; in economy class, approximately 80 seats did not contain passengers. There were 22 children under the age of 12 years aboard. One hundred and thirty passengers planned to connect to other destinations such as Tokyo, Hong Kong, and Taipei.