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CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER C—AIRCRAFT (parts 21 to 50) > PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT > SUBPART B—Flight (§29.21 to §29.251) > 29.251—Vibration.
29.251—Vibration.
Each part of the rotorcraft must be free from excessive vibration under each appropriate speed and power condition.