The Coates Swalesong is a 1970s British two-seat homebuilt monoplane. Development and operational history The Swalesong S.A.II was designed and built by J. R. Coates. It is a low-wing wooden construction (spruce with plywood skin) cantilever monoplane with a fixed tricycle undercarriage, with pilot and passenger sitting side-by-side in an enclosed cockpit with a sliding canopy. It first flew on 2 September 1973, powered by a Continental PC60 Ground Power Unit converted to Continental C90 standard. A simplified version, the Swalesong S.A.III, was designed for homebuilding, which could be powered by engines of . Only one S.A.II G-AYDV and one simplified S.A.III were built. The Swalesong S.A.II survives at Breighton Airfield, East Yorkshire. The CAA G-INFO website shows that its registration is current in February 2021. Variants Swalesong S.A.I Designation of Luton Minor registration G-AMAW built by Jim Coates in the 1950s, not connected with S.A.II or S.A.III Swalesong S.A.II Prototype, one built. Swalesong S.A.III Simplified design for amateur construction, one built. Specifications (SAII) References 1970s British civil utility aircraft Homebuilt aircraft Low-wing aircraft Single-engined tractor aircraft Aircraft first flown in 1974