Fatal Flaw

S18 E23: A modern jet plane is made up of hundreds of thousands of components. A failure in any one of them can lead to disaster. Airline inspectors and mechanics work around the clock to keep their aircraft flying and passengers safe, but just one oversight can lead to tragedy. Witness horrific air disasters caused by faulty parts that somehow went undetected by maintenance crews. Then follow crash investigators as they search piece-by-piece to find the culprit and make recommendations to ensure similar catastrophes never happen again.