Bad weather may have been a cause of Sunday’s crash that killed Ebrahim Raisi. But mechanical issues, possibly exacerbated by a lack of spare parts due to U.S. sanctions, could also be a factor.
The crash that killed Iranian President Ebrahim Raisi and several other top officials on Sunday was the latest high-profile deadly helicopter accident in recent years.
For most people, the death of retired NBA star Kobe Bryant, his 13-year-old daughter and seven others in a helicopter crash in California four years ago comes to mind. But in 2018, Thai businessman Vichai Srivaddhanaprabha, who owned the Leicester City soccer club, died along with four others in a helicopter crash. The previous year, Troy Gentry, then part of country music act Montgomery Gentry, was also killed in a crash in New Jersey.
An investigation of the crash that killed Bryant and the others aboard a Sikorsky S-76B concluded that the pilot became disoriented as the chopper flew into a cloud bank, thinking he was climbing when in fact he was plunging into a hillside. Pilot error was also blamed in the crash that killed Gentry, while an investigation of the crash involving Vichai concluded that the Leonardo AW169 helicopter was brought down by a failure of its rear rotor mechanism.
It’s impossible to say with certainty what may have caused the crash in Iran on Sunday that killed Raisi, Iranian Foreign Minister Hossein Amir-Abdollahian and the others. But one or more of the factors below may have played a part.Could bad weather have been a factor in the fatal crash?
Early reports of the crash in Iran suggest that the helicopter was flying in a „foggy, mountainous region of the country’s northwest,“ according to The Associated Press.
Poor weather conditions are a leading cause of helicopter, or rotor aircraft, crashes. According to an analysis presented at a 2021 forum of the American Institute of Aeronautics and Astronautics, in 28% of all fatal helicopter crashes, weather was a factor.
„Wind was involved in most incidents but more rarely involved in fatalities. Bad visibility conditions due to a combination of low illumination and clouds were responsible for most fatal weather-related accidents,“ the analysis says in its synopsis.
