Heinonen HK-1
The Heinonen HK-1 Keltiäinen is a Finnish single-seat, single-engined sport aircraft of the 1950s. Three examples were built. The first was used by its designer to set a class distance record in 1957 that stood for 18 years before being beaten.
| HK-1 | |
|---|---|
| Role | Sport aircraft |
| National origin | Finland |
| Designer | Juhani Heinonen |
| First flight | August 1954 |
| Status | Sole example in the Finnish Aviation Museum |
| Number built | 3 |
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