The Avro Canada CF-105 Arrow was a delta-winged interceptor aircraft, designed and built by Avro Aircraft Limited in Canada. The highly advanced design held the promise of Mach 2 speeds at altitudes exceeding 50,000 ft, and was intended to serve as the Royal Canadian Air Force's primary interceptor in the 1960s and beyond. Not long after the 1958 start of its flight test program, the development of the Arrow (including its Orenda Iroquois jet engines) was abruptly and controversially halted, sparking a long and bitter political debate.