| Date | | June 30, 1956 | | Location | | Grand Canyon, Arizona |
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| AirCraft | | Douglas DC-7 / Lockheed S Constellation |
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| location | | Grand Canyon, Arizona |
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| Reg | | N6902C/N6324C |
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| AirLine | | United Air Lines |
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| Flight No | | 718 / 1 |
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| Fatalities | | 128 : 128 |
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| Description |
| The wreckage of a United Airlines DC-7 after it collided with a TWA Constellation over the Grand Canyon in Arizona. All 128 people on both planes were killed.
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