14 CFR § 36.1583 - Noncomplying agricultural and fire fighting airplanes.
(2) Have not been shown to comply with the noise levels prescribed under appendix F of this part -
(i) For which application is made for the original issue of a standard airworthiness certificate and that do not have any flight time before January 1, 1980; or
(ii) For which application is made for an acoustical change approval, for airplanes which have a standard airworthiness certificate after the change in the type design, and that do not have any flight time in the changed configuration before January 1, 1980.
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