14 CFR 36.9

§ 36.9 Acoustical change: Propeller-driven small airplanes and propeller-driven commuter category airplanes.

United States · 14 CFR — Aeronautics and Space · Status: effective

Cite this

Citation: 14 CFR 36.9, § 36.9 Acoustical change: Propeller-driven small airplanes and propeller-driven commuter category airplanes, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/55194
Permanent ID: ys:prov:55194@1
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Full text

For propeller-driven small airplanes in the primary, normal, utility, acrobatic, transport, and restricted categories and for propeller-driven, commuter category airplanes for which an acoustical change approval is applied for under § 21.93(b) of this chapter after January 1, 1975, the following apply: (a) If the airplane was type certificated under this part prior to a change in type design, it may not subsequently exceed the noise limits specified in § 36.501 of this part. (b) If the airplane was not type certificated under this part prior to a change in type design, it may not exceed the higher of the two following values: (1) The noise limit specified in § 36.501 of this part, or (2) The noise level created prior to the change in type design, measured and corrected as prescribed in § 36.501 of this part.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.