X-Plane 9.70 – Cessna 421C Golden Eagle. The Cessna 421 Golden Eagle is a development of the earlier Cessna 411 light twin-engined personal transport aircraft. The main difference between the two models is that the 421 has a pressurized cabin. The 421 was first produced in May 1967. The 421A appeared in 1968 and the aircraft was redesigned in 1970 and marketed as the 421B. In 1975 the 421C appeared which featured wet wings, the absence of wingtip fuel tanks and landing gear that was changed from straight-leg to a trailing-link design from the 1981 model year onwards. By David Austin.