Four people were killed in Arizona when the two planes they were flying in collided into each other. The single-engine planes, one a Cessna and the other a Piper Archer III, crashed into the desert, and the Cessna burst into flames upon impact. The crash occurred far north Phoenix, some 15 miles northwest of Deer Valley Airport. Each plane was carrying two people.
Both the National Transportation Safety Board (NTSB) and the Federal Aviation Administration (FAA) are investigating the crash. Any time any aircraft goes down, investigators must consider dozens of factors. Top reasons for aviation accidents include bad weather, improper maintenance and design flaws or defects with the plane or its components.