1956 Grand Canyon mid-air collision
Air crash
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The Grand Canyon mid-air collision occurred in the western United States on June 30, 1956, when a United Airlines Douglas DC-7 struck a Trans World Airlines Lockheed L-1049 Super Constellation over Grand Canyon National Park, Arizona. The first... Wikipedia
Number of deaths: 128
Date: June 30, 1956
Summary: Mid-air collision; due to inadequate ATC system
Total survivors: 0