On September 1, 1983, Korean Air Lines flight 007, took off from Anchorage, Alaska enroute to Seoul, South Korea. The flight originated in New York City and made a refueling stop in Anchorage. The Boeing 747 had a crew of 23 and was carrying 246 passengers, 62 of which were American citizens and the rest representing 15 other nationalities. By the time KAL 007 had completed 3/4 of this leg from Anchorage to Seoul, it had inadvertently drifted 200 miles off its planned route, which caused it to fly into restricted Soviet airspace. The Soviets scrambled two interceptor jets and by a series of mistaken assumptions concluded KAL 007 was a U.S. spy plane. The pilot of one of the Soviet jets then launched two air-to-air missiles causing KAL 007 to crash in the Sea of Japan, killing all 269 aboard.
There's a blog where the author does in-depth reports of plane crashes. She posted one on KAL 007 earlier this week. Be prepared - it's an hour's worth of reading! https://admiralcloudberg.medium.com/a-shot-in-the-dark-the-untold-story-of-korean-air-lines-flight-007-a4ae6a4ef734.