Source: https://www.law.cornell.edu/cfr/text/14/23.181
Timestamp: 2016-12-10 22:55:10
Document Index: 6766927

Matched Legal Cases: ['art 23', '§ 23', '§ 23', '§ 106', '§ 40113', '§ 44701', '§ 44702', '§ 44704']

14 CFR 23.181 - Dynamic stability. | US Law | LII / Legal Information Institute
CFR › Title 14 › Chapter I › Subchapter C › Part 23 › Subpart B › Section 23.181 14 CFR 23.181 - Dynamic stability.
(a) Any short period oscillation not including combined lateral-directional oscillations occurring between the stalling speed and the maximum allowable speed appropriate to the configuration of the airplane must be heavily damped with the primary controls - (1) Free; and (2) In a fixed position. (b) Any combined lateral-directional oscillations (Dutch roll) occurring between the stalling speed and the maximum allowable speed (VFE, VLE, VN0, VFC/MFC) appropriate to the configuration of the airplane with the primary controls in both free and fixed position, must be damped to 1/10 amplitude in:
(c) If it is determined that the function of a stability augmentation system, reference § 23.672, is needed to meet the flight characteristic requirements of this part, the primary control requirements of paragraphs (a)(2) and (b)(2) of this section are not applicable to the tests needed to verify the acceptability of that system. (d) During the conditions as specified in § 23.175, when the longitudinal control force required to maintain speeds differing from the trim speed by at least plus and minus 15 percent is suddenly released, the response of the airplane must not exhibit any dangerous characteristics nor be excessive in relation to the magnitude of the control force released. Any long-period oscillation of flight path, phugoid oscillation, that results must not be so unstable as to increase the pilot's workload or otherwise endanger the airplane.
[Amdt. 23-21, 43 FR 2318, Jan. 16, 1978, as amended by Amdt. 23-45, 58 FR 42158, Aug. 6, 1993; Amdt. 23-62, 76 FR 75755, Dec. 2, 2011] This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.United States CodeU.S. Code: Title 49 - TRANSPORTATION§ 106 - Federal Aviation Administration§ 40113 - Administrative§ 44701 - General requirements§ 44702 - Issuance of certificates§ 44704 - Type certificates, production certificates, airworthiness certificates,,11 So in original. and design and production organization certificates