14 CFR 29.181 - Dynamic stability: Category A rotorcraft.
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Any short-period oscillation occurring at any speed from VY to VNE must be positively damped with the primary flight controls free and in a fixed position.
[Amdt. 29-24, 49 FR 44437, Nov. 6, 1984]
Title 14 published on 2014-01-01
no entries appear in the Federal Register after this date.