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ASDE-X is a runway surveillance program designed to prevent collisions and the FAA spent $550 million to install it at 35 of the busiest airports in the U.S. But on March 22, 2026, ASDE-X partially failed to predict a collision that would have prevented a fire truck from crossing the path of an incoming Air Canada CRJ, killing both pilots. Why did ASDE-X fail? Or, did it fail at all?
