AIR TRAFFIC CONTROL - 1956<br /> <br /> Los Angeles Center handled both flights until they crossed the Colorado River into Arizona. The flights were then monitored by by either Denver or Salt Lake City Air Traffic Control (ATC).<br /> <br /> There was no ATC radar coverage across most of the U.S. in 1956. Commercial airliners would report positions to controllers and estimate their time to the next position. (LostFlights Archive Photo)
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