Upon arriving over Bethel, Alaska, flight 007 entered the northernmost of five 50-mile (80 km) wide airways, known as the NOPAC (North Pacific) routes, that bridge the Alaskan and Japanese coasts.KAL 007's particular airway, R-20 (Romeo Two Zero), passes just 17.5 miles (28.2 km) from what was then Soviet airspace off the coast of the Kamchatka Peninsula.At 28 minutes after takeoff, civilian radar at Kenai Peninsula on the eastern shore of Cook Inlet and with radar coverage 175 miles (282 km) west of Anchorage, tracked KAL 007 5.6 miles (9.0 km) north of where it should have been.When KAL 007 did not reach Bethel at 50 minutes after takeoff, a military radar at King Salmon, Alaska, tracked KAL 007 at 12.6 nautical miles (23.3 km) north of where it should have been.There were 22 children under the age of 12 years aboard.
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). 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 EDT ( UTC, August 31).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. 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 Mc Donald, a Representative from Georgia in the United States House of Representatives.Then, when over the Bethel beacon, the flight could start using INS mode to follow the waypoints that make up route Romeo-20 around the coast of the U. According to the ICAO, the autopilot was not operating in the INS mode either because the crew did not switch the autopilot to the INS mode (shortly after Cairn Mountain), or they did select the INS mode, but the computer did not transition from INERTIAL NAVIGATION ARMED to INS mode because the aircraft had already deviated off track by more than the 7.5 miles (12.1 km) tolerance permitted by the inertial navigation computer.Whatever the reason, the autopilot remained in the HEADING mode, and the problem was not detected by the crew.