Lake controller had the last position of each aircraft, and knew that both planes were going to end up at 21,000 feet and meeting at the Painted Desert location at around the same time. The controller did not mention this to either plane as it was not his responsibility under VFR conditions. Weather conditions were worsening and cloud cover at that time would range from 15,000 feet to 25,000 feet. Well within the boundaries of each aircraft’s altitude. At around 10:31, the two planes collided over the Grand Canyon and fell to the canyon floor. III. Significance of the Problem If both aircraft had switched their first destinations, they would not have crossed.
4.3 - CASE ANALYSIS: GRAND CANYON COLLISION 4 “If TWA 2 had not been delayed 31 minutes, it would have safely passed the point of intersection long before United 718 reached that point” (Samuels, 2019). The Salt Lake controller should have informed both aircraft of the pending collision. Clearance by air traffic controllers to allow TWA 2 to fly that close to United 718 was a dangerous decision that ultimately cost the lives of 128 people. IV. Development of Alternative Actions Alternative Action 1. Both flights should have switched their first destination on the flight plan. Advantages. This would have allowed no chance of a collisions, as both planes would have been miles apart.
- Spring '12
- Visual flight rules, Grand Canyon Collision