On February 20, 1959 — a date Canadian aerospace engineers still call "Black Friday" — Prime Minister John Diefenbaker stood in Parliament and killed the most advanced interceptor aircraft on Earth. Within weeks, all five completed Avro Arrows, 31 airframes in production, the jigs, the blueprints, and the wind-tunnel models were cut up with torches and sold for scrap. Roughly 14,000 people lost their jobs overnight. Most of Avro's top engineers were on a plane to NASA within months — including Jim Chamberlin, who would design the Gemini spacecraft, and 25 others who became the backbone of the Apollo program.

What was destroyed was extraordinary. The CF-105 Arrow, designed by Avro Canada starting in 1953, was a delta-winged, twin-engine interceptor built to climb to 50,000 feet and engage Soviet bombers over the Arctic at Mach 2+. The prototype, RL-201, first flew on March 25, 1958, and on its seventh flight hit Mach 1.98 — still climbing. Test pilot Jack Woodman reported it had thrust to spare. With the planned Orenda Iroquois engines (a Canadian-designed turbojet pushing 26,000 lbf with afterburner — lighter and more powerful than anything Pratt & Whitney had), engineers calculated Mach 2.5 was achievable.

The technical pedigree was staggering for 1958:

• Fly-by-wire flight controls — the Arrow had a primitive analog FBW system years before the Concorde or F-16.
• Negative static stability with computer augmentation — a concept that wouldn't reach US fighters until the F-16 in 1974.
• Integrated weapons-and-fire-control computer (the RCA-Victor Astra/Sparrow II system) — an early avionics bus.
• Titanium-heavy airframe built for sustained supersonic cruise heating.

So why was it killed? Three forces converged. Cost overruns: per-unit price had climbed from a projected $2M to over $12M — partly because Britain and the US refused to buy in. Doctrine shift: Sputnik in 1957 convinced Diefenbaker that ICBMs, not bombers, were the threat — so Canada bought Bomarc surface-to-air missiles instead (which turned out to be worse than useless). Politics: Diefenbaker, a prairie populist, distrusted the Toronto-based aerospace establishment. The order to destroy the airframes — not mothball them — has never been fully explained. Theories range from Pentagon pressure (the Arrow embarrassed the F-106) to a simple desire to make the cancellation irreversible.

Why it matters in 2026: The Arrow's design problem — a long-range, high-altitude, high-speed interceptor for patrolling vast, sparsely populated airspace — has come back. The Arctic is melting, Russian Tu-160s are flying patrols again, and hypersonic cruise missiles need interceptors that can climb fast and engage at extreme range. The F-35 is a strike-fighter compromise, not an interceptor. China's J-XX and Russia's MiG-41 programs are explicitly chasing the Arrow's flight envelope. With modern composites cutting airframe weight 30%, adaptive-cycle engines (the GE XA100 class), and AESA radar, a CF-105-shaped aircraft is not just feasible — it's arguably what NORAD needs. Canada's FAdM (Future Aircrew Defence) studies in 2024 quietly cited Arrow performance specs as a baseline.

The cruelest detail: a single nose section and two outer wing panels survive at the Canada Aviation Museum. Everything else is landfill.