§36.9. Acoustical change: Propeller-driven small airplanes and propeller-driven commuter category airplanes.
14 C.F.R. § 36.9
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:
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.
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:
The noise limit specified in § 36.501 of this part, or
The noise level created prior to the change in type design, measured and corrected as prescribed in § 36.501 of this part.
Notes, amendments, and revision history
Amendments
[Amdt. 36-16, 53 FR 47400, Nov. 22, 1988; 53 FR 50157, Dec. 13, 1988; Amdt. 36-19, 57 FR 41369, Sept. 9, 1992]
Authority
Authority: 42 U.S.C. 4321 et seq.; 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.
Source
Source: Docket No. 9337, 34 FR 18364, Nov. 18, 1969, unless otherwise noted.
Amendments
[Amdt. 36-16, 53 FR 47400, Nov. 22, 1988; 53 FR 50157, Dec. 13, 1988; Amdt. 36-19, 57 FR 41369, Sept. 9, 1992]