Metal fatigue primary focus of NTSB investigation in fatal Piper Arrow crash

​WASHINGTON, D.C. — The National Transportation Safety Board has issued an investigative update on its investigation of the April 4, 2018, crash of a Piper PA-28R-201 near Daytona Beach, Florida. Two people suffered fatal injuries following an in-flight separation of the airplane’s left wing shortly after takeoff. The airplane subsequently collided with terrain and was destroyed. […]