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Code · CFR · Title 14 — Aeronautics and Space · Part 29 — Airworthiness Standards: Transport Category Rotorcraft · § 29.659

§ 29.659. Mass balance.

49 words·~1 min read·/us/cfr/t14/s§ 29.659·

A research copy — for the controlling text, always check the official state or federal source. Not legal advice.

(a)The rotor 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. [Amdt. 29-3, 33 FR 967, Jan. 26, 1968]
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