14 CFR · Part 29
14 CFR § 29.181
Dynamic stability: Category A rotorcraft.
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.
Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.
Primary Source