There is one reason why planes crash. Michael asks the question to David Soucie in this conversation about his book "Why Planes Crash: An Accident Investigator's Fight for Safe Skies." This interview happened just a few months after the disappearance of Malaysian Airlines Flight 370, which through today remains one of the world's greatest aviation mysteries. Soucie is a longtime aviation accident investigator and industry expert, and penned this book three years prior. Original air date 17 July 2014. The book was published in 2011.