The North American Aviation F-86 Sabre (sometimes called the Sabrejet) was a transonic jet fighter aircraft. The Sabre is best known for its Korean War role where it was pitted against the Soviet MiG-15 and obtained UN air superiority. Although developed in the late 1940s and outdated by the end of the 1950s, the Sabre proved adaptable and continued as a front line fighter in air forces until the last active front line examples were retired by the Bolivian Air Force in 1994.

Its success led to an extended production run of more than 7,800 aircraft between 1949 and 1956,^{[citation needed]} in the United States, Japan and Italy. It was by far the most-produced Western jet fighter, with total production of all variants at 9,860 units.

Variants were built in Canada and Australia. The Canadair Sabre added another 1,815 airframes, and the significantly redesigned CAC Sabre (sometimes known as the Avon Sabre or CAC CA-27), had a production run of 112.

Initial proposals to meet a USAAF requirement for a single-seat high-altitude day fighter aircraft/escort fighter/fighter bomber were made in late 1944, and were originally to be derived from the design of the straight wing FJ-1 Fury being developed for the U.S. Navy. The North American P-86 Sabre was the first American aircraft to take advantage of flight research data seized from the German aerodynamicists at the end of the war. Performance requirements were met by incorporating a 35 degree swept-back wing with automatic slats into the design, using the Me 262 wing profile, Messerschmitt wing A layout and adjustable stabilizer. Manufacturing was not begun until after World War II as a result. The XP-86 prototype, which would become the F-86 Sabre, first flew on 1 October 1947 from Muroc Dry Lake, California.

The USAF Strategic Air Command had F-86 Sabres in service from 1949 through 1950. The F-86s were assigned to the 22nd Bomb Wing, the 1st Fighter Wing and the 1st Fighter Interceptor Wing.

The F-86 was produced as both a fighter-interceptor and fighter-bomber. Several variants were introduced over its production life, with improvements and different armament implemented (see below). The XP-86 (eXperimental Pursuit) was fitted with a General Electric J35-C-3 jet engine that produced 4,000 lbf (18 kN) of thrust. This engine was built by GM's Chevrolet division until production was turned over to Allison.^[8] The General Electric J47-GE-7 engine was used in the F-86A-1 producing a thrust of 5,200 lbf (23 kN) while the General Electric J73-GE-3 engine of the F-86H produced 9,250 lbf (41 kN) of thrust. The F-86 was the primary U.S. air combat fighter during the Korean War, with significant numbers of the first three production models seeing combat.

The fighter-bomber version (F-86H) could carry up to 2,000 lb (907 kg) of bombs, including an external fuel-type tank that could carry napalm.

Both the interceptor and fighter-bomber versions carried six 0.50 in (12.7 mm) M3 Browning machine guns with electrically-boosted feed in the nose (later versions of the F-86H carried four 20 mm (0.79 in) cannons instead of machine guns). Firing at a rate of 1,200 rounds per minute each, the .50 in (12.7 mm) guns were harmonized to converge at 1,000 ft (300 m) in front of the aircraft, using armor-piercing (AP) and armor-piercing incendiary (API) rounds, with one armor-piercing incendiary tracer (APIT) for every five AP or API rounds. The API rounds used during the Korean War contained magnesium, which were designed to ignite upon impact but burned poorly above 35,000 ft (11,000 m) as oxygen levels were insufficient to sustain combustion at that height. Initially fitted with the Mark 18 manual-ranging computing gun sight, later models used the A-1CM radar ranging gunsight which used radar to compute the range of a target. This would later to prove a significant advantage against MiG opponents over Korea, and fitted to later supersonic fighters such as the F-100 and F-105.

Unguided 2.75 in (70 mm) rockets were used on some of the fighters in target practice, but 5 in (127 mm) rockets were later used in combat operations. The F-86 could also be fitted with a pair of external jettisonable fuel tanks (four on the F-86F beginning in 1953) that extended the range of the aircraft.

The F-86 Sabre was also license produced by Canadair Limited in Montreal as the Canadair Sabre. The final variant of the Canadian Sabres, the Mk 6, is generally rated as being one of the most capable of all Sabre variants built anywhere.^[11] The last Sabre to be manufactured by Canadair Ltd. (Sabre #1815) now resides at the Western Canada Aviation Museum (WCAM)'s permanent collection in Winnipeg, Canada after being donated by the Pakistan Air Force.

The F-86A set its first official world speed record of 570 mph (920 km/h) in September 1948.

Several people involved with the development of the F-86, including the chief aerodynamicist for the project and one of its other test pilots, claimed that North American test pilot George Welch had broken the sound barrier in a dive with the XP-86 while on a test flight 1 October 1947. (Chuck Yeager went supersonic on 14 October 1947 in the rocket powered Bell X-1, the first aircraft to sustain supersonic speeds in level flight, making it the first "true" supersonic aircraft).

On 18 May 1953, Jacqueline Cochran flying a Canadian-built F-86E alongside Chuck Yeager became the first woman to break the sound barrier.