Since 1948, 83 aircraft have been reported as officially missing worldwide, and almost all of them (77) have not been found to this day. This includes the recent Malaysian Airline Flight 370, which an extended multi-national effort has yet to recover. According to the official website of Cospas-Sarsat (Montreal, Canada), the organization responsible for monitoring specific frequencies and alerting national authorities when they receive a distress signal, more than 600 people were rescued from situations in which distress radio beacons were activated in 2012. Events requiring Cospas-Sarsat assistance were split with 30 percent coming from land vehicles, 48 percent from ships, and 22 percent from planes.
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