RV-4

The Van’s Aircraft RV‑4 is a two‑seat, single‑engine sport aircraft that has become a staple of the home‑built community since its introduction in the late 1970s. Designed by Richard VanGrunsven as a tandem‑seat derivative of the popular RV‑3, the RV‑4 first flew in 1977 and was offered as a kit in 1979, quickly gaining a reputation for excellent handling, strong climb performance, and a relatively simple construction process. The aircraft features an all‑metal semi‑monocoque airframe, a low‑wing layout, and a large, constant‑chord wing that provides both roll‑rate agility and gentle stall characteristics. Most builders install a Lycoming O‑320 or O‑360 engine delivering 150–180 hp, which gives cruise speeds of 170–190 knots and a useful load suitable for cross‑country trips. Because of its tandem cockpit, the RV‑4 offers superb forward visibility and an open‑air feel that appeals to sport pilots and aerobatic enthusiasts alike. Its significance lies in popularizing the kit‑built movement, demonstrating that high‑performance, aerobatic‑capable aircraft can be assembled by amateurs, and inspiring a series of later Van’s models that dominate the experimental aircraft market today. Today over 1,000 RV‑4s fly worldwide, cherished for performance and simplicity and timeless charm.

Van's Aircraft

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