14 CFR § 36.801 - Noise measurement.
---
identifier: "/us/cfr/t14/s36.801"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 36.801 - Noise measurement."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "36.801"
section_name: "Noise measurement."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "AIRCRAFT"
part_number: "36"
part_name: "NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 4321 49 U.S.C. 106(f), 40113, 44701-44702, 44704, 44715; sec. 305, Pub. L. 96-193, 94 Stat. 50, 57; E.O.11514, 35 FR 4247, 3 CFR, 1966-1970 Comp., p. 902."
regulatory_source: "Docket No. 9337, 34 FR 18364, Nov. 18, 1969, unless otherwise noted."
cfr_part: "36"
---
# 36.801 Noise measurement.
For primary, normal, transport, or restricted category helicopters for which certification is sought under appendix H of this part, the noise generated by the helicopter must be measured at the noise measuring points and under the test conditions prescribed in part B of appendix H of this part, or under an FAA-approved equivalent procedure. For those primary, normal, transport, and restricted category helicopters having a maximum certificated takeoff weight of not more than 7,000 pounds for which compliance with appendix J of this part is demonstrated, the noise generated by the helicopter must be measured at the noise measuring point and under the test conditions prescribed in part B of appendix J of this part, or an FAA-approved equivalent procedure.
[Doc. No. 26910, 57 FR 42854, Sept. 16, 1992, as amended by Amdt. 36-25, 69 FR 31234, June 2, 2004]