DBS Studio, known from the Walk-and-Follow application, now presents us with a panel for a Yak-40. According to their information it can be used in FS2004 AND in FSX, and on other aircraft than just the Yak-40 too. They also mention that "….. the DBS Yak-40 Panel has authentic "Kremen" autopilot logics (altitude hold, bank/pitch control by autopilot handle). Recommended screen resolution to use DBS Yak-40 Panel in fullscreen mode is 1280×1024 (or similar 5:4 screen resolution)….".
The panel is available from simMarket.