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Extract: A slightly improved standard-class version, the CS 77, was introduced in 1977. It has a different rudder profile and a slimmer fuselage similar to that of the Speed Astir. The Standard II and Standard III versions followed in the early 1980s, reverting to the higher-profile fuselage and with a reduced empty weight and an increased payload.
To keep it simple, the overall name is Astir CS (as shown in the pictures posting 1, see the stubby Nose)