Aeroflot flight 7425

On July 10, 1985 a Tupolev Tu-154 cruising over Soviet Russia suddenly stalled and entered a flat spin from which the pilots were unable to recover. All 200 people aboard were killed in the subsequent crash. Did something mechanical go wrong or were the pilots to blame? Or was it something else? This is the story of Aeroflot flight 7425 & the lessons learned about human factors in aviation.