cfr_sections: 14:14:1.0.1.3.15.4.175.16

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section_id	title_number	title_name	chapter	subchapter	part_number	part_name	subpart	subpart_name	section_number	section_heading	agency	authority	source_citation	amendment_citations	full_text
14:14:1.0.1.3.15.4.175.16	14	Aeronautics and Space	I	C	27	PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT	D	Subpart D—Design and Construction	27.659	§ 27.659 Mass balance.	FAA	49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.	Docket No. 5074, 29 FR 15695, Nov. 24, 1964, unless otherwise noted.	[Amdt. 27-2, 33 FR 963, Jan. 26, 1968]	(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.