After 1967, the turbo TU206 was powered by a TSIO-520-F of . The extra was obtained by turning the engine at a higher rpm, and was allowed for only five minutes. Due to the large propeller diameter, the additional engine speed meant that the propeller tips were pushed to transonic speeds, which required much more power. From 1964 to 1969, the U206 was known as the “Super Skywagon”. From 1970, it was named the “Stationair”, a contraction of “Station Wagon of the Air”, which is a good description of the aircraft's intended role. Sub-variants were designated U206 to U206G. In 1977, the U206 had its engine upgraded to a Continental IO-520-F of (continuous rating, obtained at a lower speed than the previous IO-520-F) and the TU206 powerplant was changed to the TSIO-520-M producing . Production of all versions of the U206 was halted in 1986 when Cessna stopped manufacturing all piston-engined aircraft. A total of 5,208 U206s had been produced. Cessna P206 The P206 was added to the line in 1965. In this case the "P" stood for "passenger", as the P206 had passenger doors similar to the Cessna 210 from which it was derived, on both sides. The P206 was produced from 1965 to 1970 and was powered by a Continental IO-520-A of . There was a turbocharged model designated TP206 which was powered by a Continental TSIO-520-A also of . Production of the P206 amounted to 647. The name “Super Skylane” made it sound like a version of the Cessna 182, which it was not. Sub-variants were designated P206 to P206E. Cessna 206H After a production hiatus of twelve years, Cessna started manufacturing a new version of the venerable 206 in 1998, with the introduction of the newly certified 206H. The “H” model is generally similar to the previous U206 configuration, with a pilot entry door and a rear double clamshell door for access to the middle and back seats. The "H" is marketed under the name "Stationair". The 206H is powered by a Lycoming IO-540-AC1A powerplant producing . The turbocharged T206H is powered by a Lycoming TIO-540-AJ1A engine of . Even though the Cessna 206H is certified as a six-seat aircraft in its country of origin, the Canadian aviation regulator, Transport Canada has certified it to carry only five people in Canada. This is due to concerns about passenger egress through the rear clamshell door with the