How did Planes Fly Before GPS?

Transcript

On September 1st, 1983, Korean Air Lines Flight 007 was making a regularly scheduled flight from New York to Seoul, South Korea via Anchorage. Unknown to the pilots, because of an error in setting the autopilot system, the plane began deviating from its intended course, and flew over Russian controlled airspace in Kamchatka. Today, this deviation w... Read More