The Bell 212 helicopter that crashed in dense fog over East Azerbaijan due to technical failures leading to death of president Raisi and the foreign minister of Iran, was originally built in 1971 for the Canadian Armed Forces. Later supplied to the US Army and in 1988 manufactured in Quebec, then discontinued in 1998. Iran and other countries in eastern Europe still use Bell 212 helicopters which were widely used for commercial purposes. Iran has to contend with difficulty of getting spare parts from the US and Canada. The only other crash reported for Bell 212 is one in 1986 in North Sea oil facilities in dense fog. Reports say the 50 year old Bell 212 depends on visual flight conditions meaning only what the pilot can see from his seat which would have made it very difficult in the steep mountain slopes of eastern Azerbaijan.