iran air flight 291 was a flight that crash landed on january 21, 1980. the flight, carried on a , was making a flight from to in iran. at 19:11 local time, the plane crashed into the , north of , during its approach to tehran-mehrabad runway 29 in foggy and snowy weather conditions. all 8 crew members and 120 passengers died in the incident, and the plane was destroyed. at the time, iran air flight 291 was the deadliest aircraft disaster in iranian history.