page_title: 1956 Grand Canyon mid-air collision
hierarchical_section_title: 1956 Grand Canyon mid-air collision
caption_attribution_description: English: Aircraft involved in the 1956 Grand Canyon mid-air collision Français&#160;: Collision aérienne au Grand Canyon en 1956. Les deux avions traversaient un nuage. L'avion DC7 de United Airlines de couleurs bleu et blanc (vol 718) entrant en montée dans le nuage, ici l'avion DC7 remonte la queue pour effectuer une descente d'urgence d'évitement, mais deux avions sont déjà trop proche. La collision est donc inévitable.
context_page_description: The Grand Canyon mid-air collision occurred on June 30, 1956, when a United Airlines Douglas DC-7 struck a Trans World Airlines Lockheed L-1049 Super Constellation over the Grand Canyon National Park. All 128 onboard both flights perished, making it the first commercial airline crash to result in more than 100 deaths.
  The collision took place in uncontrolled airspace, where it was the pilots' own responsibility to maintain separation. This highlighted the antiquated state of air traffic control, which became the focus of major aviation reforms.
context_section_description: The Grand Canyon mid-air collision occurred on June 30, 1956, when a United Airlines Douglas DC-7 struck a Trans World Airlines Lockheed L-1049 Super Constellation over the Grand Canyon National Park. All 128 onboard both flights perished, making it the first commercial airline crash to result in more than 100 deaths.
  The collision took place in uncontrolled airspace, where it was the pilots' own responsibility to maintain separation ("See and avoid"). This highlighted the antiquated state of air traffic control, which became the focus of major aviation reforms.
caption: An artist's impression of United Airlines Flight 718 colliding with TWA Flight 2.
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