14 C.F.R. Subpart H—Helicopters
Title 14 - Aeronautics and Space
Source: Amdt. 36–14, 53 FR 3540, Feb. 5, 1988; 53 FR 7728, Mar. 10, 1988, unless otherwise noted.
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] The noise measurement data required under §36.801 and obtained under appendix H of this part must be corrected to the reference conditions contained in part A of appendix H of this part, and evaluated under the procedures of part C of appendix H of this part, or an FAA-approved equivalent procedure. The noise measurement data required under §36.801 and obtained under appendix J of this part must be corrected to the reference conditions contained in part A of appendix J of this part, and evaluated under the procedures of part C of appendix J of this part, or an FAA-approved equivalent procedure. [Doc. No. 26910, 57 FR 42854, Sept. 16, 1992] (a) Compliance with the noise levels prescribed under part D of appendix H of this part, or under part D of appendix J of this part, must be shown for helicopters for which application for issuance of a type certificate in the primary, normal, transport, or restricted category is made on or after March 6, 1986. (b) For helicopters covered by this section, except as provided in paragraph (c) or (d)(2) of this section, it must be shown either: (1) For those helicopters demonstrating compliance under appendix H of this part, the noise levels of the helicopter are no greater than the applicable limits prescribed under section H36.305 of appendix H of this part, or (2) For helicopters demonstrating compliance under appendix J of this part, the noise level of the helicopter is no greater than the limit prescribed under section J36.305 of appendix J of this part. (c) For helicopters for which application for issuance of an original type certificate in the primary, normal, transport, or restricted category is made on or after March 6, 1986, and which the FAA finds to be the first civil version of a helicopter that was designed and constructed for, and accepted for operational use by, an Armed Force of the United States or the U.S. Coast Guard on or before March 6, 1986, it must be shown that the noise levels of the helicopter are no greater than the noise limits for a change in type design as specified in section H36.305(a)(1)(ii) of appendix H of this part for compliance demonstrated under appendix H of this part, or as specified in section J36.305 of appendix J of this part for compliance demonstrated under appendix J of this part. Subsequent civil versions of any such helicopter must meet the Stage 2 requirements. (d) Helicopters in the primary category: (1) Except as provided in paragraph (d)(2) of this section, for a helicopter for which application for a type certificate in the primary category is made, and that was not previously certificated under appendix H of this part, compliance with appendix H of this part must be shown. (2) For a helicopter that: (i) Has a normal or transport type certificate issued under this chapter, (ii) Has a standard airworthiness certificate issued under this chapter, (iii) Has not undergone an acoustical change from its type design, (iv) Has not previously been certificated under appendix H of this part, and (v) For which application for conversion to the primary category is made, no further showing of compliance with this part is required. [Doc. No. 26910, 57 FR 42855, Sept. 16, 1992]
Title 14: Aeronautics and Space
PART 36—NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION
Subpart H—Helicopters
§ 36.801 Noise measurement.
§ 36.803 Noise evaluation and calculation.
§ 36.805 Noise limits.
