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Federal regulations · Through 2026-08-25 · Newer source version available

14 CFR 27.659: Mass balance.

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Where this section sits in the code
  1. Title 14—Aeronautics and Space
  2. CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
  3. SUBCHAPTER C—AIRCRAFT
  4. PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
  5. Subpart D—Design and Construction

(a) The rotors and blades must be mass balanced as necessary to—

(1) Prevent excessive vibration; and

(2) Prevent flutter at any speed up to the maximum forward speed.

(b) The structural integrity of the mass balance installation must be substantiated.

Collected 2026-08-27T02:24:20Z. Source file · JSON

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