The Iroquois was originally designated HU-1, hence the Huey nickname, which has remained in common use, despite the official redesignation to UH-1 in 1962. Various derivatives and developments of the Iroquois were produced. A dedicated attack helicopter, the Bell AH-1 Cobra, was derived from the UH-1, and retained a high degree of commonality. The Bell 204 and 205 are Iroquois versions developed for the civilian market. In response to demands from some customers, a twin-engined model, the UH-1N Twin Huey, was also developed during the late 1960s; a further updated four rotor model, the Bell 412, entered service in Canada but not the US. A further updated UH-1 with twin engines and four-bladed derivative, the Bell UH-1Y Venom, was also developed during the early twenty-first century for the USMC. In US Army service, the Iroquois was gradually phased out following the introduction of the Sikorsky UH-60 Black Hawk and the Eurocopter UH-72 Lakota in the early 21st century. However, hundreds were still in use more than 50 years following the type's introduction. In excess of 16,000 Iroquois have been built since 1960. With new orders from Japan and the Czech Republic, the UH-1 remains in production. Several export customers, such as Canada, Germany, Taiwan, Japan, and Italy, opted to produce the type under license. Operators have been located across the world, including the Americas, Europe, Asia, Africa, the Middle East, and the Pacific region.
the iroquois was originally designated hu-1 hence the huey nickname which has remained in common use despite the official redesignation to uh-1 in 1962 various derivatives and developments of the iroquois were produced a dedicated attack helicopter the bell ah-1 cobra was derived from the uh-1 and retained a high degree of commonality the bell 204 and 205 are iroquois versions developed for the civilian market in response to demands from some customers a twin-engined model the uh-1n twin huey was also developed during the late 1960s; a further updated four rotor model the bell 412 entered service in canada but not the us a further updated uh-1 with twin engines and four-bladed derivative the bell uh-1y venom was also developed during the early twenty-first century for the usmc in us army service the iroquois was gradually phased out following the introduction of the sikorsky uh-60 black hawk and the eurocopter uh-72 lakota in the early 21st century however hundreds were still in use more than 50 years following the type's introduction in excess of 16000 iroquois have been built since 1960 with new orders from japan and the czech republic the uh-1 remains in production several export customers such as canada germany taiwan japan and italy opted to produce the type under license operators have been located across the world including the americas europe asia africa the middle east and the pacific region