Like other early Italian monoplanes, the C.200 suffered from a dangerous tendency to go into a spin.Sgarlato 2008, p. 6. Early production C.200 aircraft showed autorotation problems similar to those found in the Fiat G.50 Freccia, IMAM Ro.51, and the Aeronautica Umbra Trojani AUT.18. At the beginning of 1940, a pair of deadly accidents occurred due to autorotation. Aircraft production and deliveries were halted while the Regia Aeronautica evaluated the potential for abandoning use of the type, as the skill involved in flying the C.200 was considered to be beyond that of the average pilot.de Marchi 1994. Quote: "Sopraggiungono due incidenti mortali per autorotazione che fanno sospendere voli e consegne, si pensa di abbandonare la macchina classificata non pilotabile dalla media dei piloti" (Two fatal accidents occurred due to autorotation that caused suspension of flights and deliveries, prompting consideration of abandoning the use of the aircraft, as it was considered "unflyable" by the average pilot.) The problem was a product of the profile of the wing. Castoldi soon tested a new profile, but a solution to the autorotation problem was found by Sergio Stefanutti, chief designer of SAI Ambrosini in Passignano sul Trasimeno, based on studies conducted by German aircraft engineer Willy Messerschmitt and the American National Advisory Committee for Aeronautics (NACA). He redesigned the wing section with a variable, instead of constant, profile,Sgarlato 2008, pp. 7–8. which was achieved by covering parts of the wings with plywood.
Like other early Italian monoplanes, the C.200 suffered from a dangerous tendency to go into a spin.Sgarlato 2008, p. 6. Early production C.200 aircraft showed autorotation problems similar to those found in the Fiat G.50 Freccia, IMAM Ro.51, and the Aeronautica Umbra Trojani AUT.18. At the beginning of 1940, a pair of deadly accidents occurred due to autorotation. Aircraft production and deliveries were halted while the Regia Aeronautica evaluated the potential for abandoning use of the type, as the skill involved in flying the C.200 was considered to be beyond that of the average pilot.de Marchi 1994. Quote: "Sopraggiungono due incidenti mortali per autorotazione che fanno sospendere voli e consegne, si pensa di abbandonare la macchina classificata non pilotabile dalla media dei piloti" (Two fatal accidents occurred due to autorotation that caused suspension of flights and deliveries, prompting consideration of abandoning the use of the aircraft, as it was considered "unflyable" by the average pilot.) The problem was a product of the profile of the wing. Castoldi soon tested a new profile, but a solution to the autorotation problem was found by Sergio Stefanutti, chief designer of SAI Ambrosini in Passignano sul Trasimeno, based on studies conducted by German aircraft engineer Willy Messerschmitt and the American National Advisory Committee for Aeronautics (NACA). He redesigned the wing section with a variable, instead of constant, profile,Sgarlato 2008, pp. 7–8. which was achieved by covering parts of the wings with plywood.