On May 19/20, 2024 a helicopter carrying Iranian PresidentEbriham Raisiand Iranian Foreign MinisterAbdollahiancrashed in a mountainous area of Iran, in bad weather. They are presumed dead according to Iranian Red Crescenthttps://en.wikipedia.org/wiki/2024_Varzaqan_helicopter_crash. A major concern is that Israel might eventually be blamed for killing Raisi by sabotaging the helicopter. It may heighten Iran’s conflict with Israel.
Old helicopters are more prone to major, even fatal, defects. It may be significant that the original US production run Bell 212 that Raisi was travelling in was last delivered to any customer in 1998 - so Raisi's helicopter may have been 26 years old. Also if the US cut off helicopter exports to Iran before the Iranian Revolution in 1979 this might suggest Raisi's helicopter was at least 45 years old.