Saab J 32 Lansen
The Saab 32 Lansen is a two-seat transonic jet designed and built by Saab in Sweden, first flown on 3 November 1952. Developed to defend Sweden's coastline, it was built in three main versions — the A 32A attack aircraft (287 built), the J 32B all-weather fighter (118) and the S 32C reconnaissance aircraft (45) — 450 production aircraft in all, with later conversions serving as target tugs and electronic-warfare aircraft. It was the Swedish Air Force's first twin-seat jet and the first Swedish type with a built-in search radar, and in 1953 it became the first Swedish aircraft to exceed the speed of sound. The front-line versions had retired by 1978, but converted aircraft flew on until 1997, and the Swedish Air Force Historic Flight still flies Lansens today.
Why It Mattered
The Saab 32 Lansen was the jet Sweden built to guard its own coastline in the early Cold War, designed and manufactured by Saab at Linköping. The air force requirement behind it was demanding: the aircraft had to reach any point along Sweden's 2,000 km of coastline within an hour of launch, in any weather, by day or night. Saab answered with the service's first two-seat jet and its first aircraft with a built-in search radar, produced in attack, fighter and reconnaissance versions. For more than twenty years the attack version formed the backbone of Sweden's strike force, whose purpose was to repel an invasion fleet. In 1953 a Lansen in a shallow dive became the first Swedish aircraft to pass the speed of sound.
Design Notes
Development began in late autumn 1946 as a successor to the piston-engined Saab B 18/S 18, and a design and mock-up contract for Saab's P1150 followed in December 1948. The planned Swedish STAL Dovern engine was abandoned for technical reasons, and the Lansen flew instead on the RM5, a licence-built Rolls-Royce Avon with an afterburner. Its wing, swept at 35 degrees with a thin laminar profile, was tested at half scale on a Saab Safir before the full-size aircraft flew. The pilot and navigator sat in a pressurised cockpit, working an Ericsson radar whose antenna was housed in a large blister under the nose. Armament differed by version: the attack aircraft hid four 20 mm Bofors cannon under nose flaps and could carry the Rb 04 anti-ship missile, while the fighter carried four 30 mm ADEN cannon.
Operational History
Test pilot Bengt Olow flew the prototype for the first time on 3 November 1952, and series production began the following year. Deliveries of the A 32A attack version began in December 1955; 287 were built, and from early 1956 they equipped attack wings across southern Sweden. The attack Lansens served until the last were decommissioned in 1978, replaced by the Viggen. The J 32B fighter, with a more powerful engine and radar for finding aircraft in darkness and bad weather, entered service in 1958 and flew until the early 1970s; 118 production aircraft were built. The S 32C reconnaissance version, 45 built, flew maritime patrols over the Baltic from F 11 Nyköping between 1958 and 1978, using cameras and a radar optimised for detecting ships. Over 25 years of service, accidents wrote off roughly a third of the fleet; 100 crew members died, along with seven civilians at Vikbo in 1960. After front-line retirement, twenty J 32Bs were converted as target tugs and electronic-warfare aircraft, and these second careers kept the Lansen in Swedish service until 1997.
Afterlife
Most Lansens were retired during the 1990s, but a few kept working: in 2010 at least two still flew high-altitude air sampling for research with the Swedish Radiation Safety Authority, and all had been withdrawn by April 2020. One afterlife experiment stands out in Aeroseum's telling: in 1969–1971, four J 32Bs at F 21 Luleå were rebuilt as snow-clearing machines, their jet exhaust ducted down to melt runway ice, before poor efficiency and heavy fuel consumption ended the experiment. Today several Lansens are preserved in museums in Sweden and abroad, including an A 32A at the Swedish Air Force Museum in Linköping. Two Lansens remain airworthy with the Swedish Air Force Historic Flight at Såtenäs, and a J 32B flew in the flight's six-jet formation at the Jubileumsflygdagar airshow in 2026.