NTSB issues probable cause into 2013 crash caught on camera.
Some surprising findings are highlighted in the National Transportation Safety Board accident report detailing what went horribly wrong in the skies over Afghanistan in May 2013, when a National Airlines Boeing 747 cargo plane climbing out after takeoff suddenly rolled over and plummeted into the ground, sending up a massive fireball.
The dramatic accident was captured on the dashcam of a passing motorist.
