About 1973 Cessna added a cuff to the leading edge of the wing making a already docile airplane even more so and very difficult to spin. This was done after STC modifications were being sold to modify the wing in the same way. The Cessna 172 has the best fatal safety record of any GA airplane followed by the 150 and then 182. High wing single engine Cessna airplanes with struts have a very good safety record.