spectacularly. His performance has been credited with Belgium's decision to purchase the CF-100 for the Belgian Air Force. Additional efforts were made to sell the Canuck to several other nations, including the United States, but no other export customers for the type would be secured. Dow reasoned that the Canuck's poor overseas sales performance caused officials to have little confidence for exporting other aircraft, including the CF-105 Arrow. During the type's production life, 692 CF-100s of different variants were manufactured, including the 53 aircraft that were delivered to the Belgian Air Force. Although originally designed for only 2,000 flight hours, it was found that the Canuck's airframe could serve for over 20,000 hours before needing to be withdrawn. The Belgian aircraft were either scrapped after storage or written off in crashes. Consequently, though the Canadian CF-100 would be replaced in its front line role by the faster CF-101 Voodoo, the Canuck continued to serve with 414 Squadron of the Canadian Forces, based at CFB North Bay, Ontario; during its later years, the type was tasked with aerial reconnaissance, training and electronic warfare missions. It was finally withdrawn from service during 1981. After the CF-100 was retired, a number of aircraft still remain across Canada (and elsewhere) as static displays. During the late 1950s, an advanced supersonic interceptor, CF-105 Arrow along with the sophisticated Orenda Iroquois engine, was under development by Avro Canada as an intended successor to the CF-100. However, during 1959, work on the CF-105 was terminated following a controversial decision by the Canadian government. Variants CF-100 Mk 1 : The first two prototypes. CF-100 Mk 1P : Proposed photo-reconnaissance version. Not built. CF-100 Mk 2 : Ten pre-production aircraft. CF-100 Mk 2T : Dual control training version of the CF-100 Mk 2. Two built. CF-100 Mk 3 : Two-seat all-weather long-range interceptor fighter aircraft. First production version for the RCAF. Eight .5-inch Browning M3 guns (200 rounds per gun) in a forward firing ventral gun pack. 70 built. CF-100 Mk 3A : CF-100 Mk 3 sub-type, powered by two Orenda 2 turbojet engines. 21 built. CF-100 Mk 3B : CF-100 Mk 3 sub-type, powered by two Orenda 8 turbojet engines. 45 built. CF-100 Mk 3CT : One CF-100 Mk 3 converted into a dual control training aircraft. Later redesignated CF-100 Mk 3D. CF-100 Mk 4 : Two-seat all-weather long-range interceptor fighter aircraft. Eight .5-inch Browning M3 guns (200