§1031.90. Supersonic engines.
40 C.F.R. § 1031.90
The following standards apply to new engines installed in supersonic airplanes:
Smoke. Engines of a type or model for which the date of manufacture was on or after January 1, 1984, may not have a characteristic level for smoke number exceeding an emission standard that is the lesser of 50 or the following:
[Reserved]
HC. Engines of a type or model for which the date of manufacture was on or after January 1, 1984, may not have a characteristic level for HC exceeding the following emission standard in g/kN rated output:
CO. Engines of a type or model for which the date of manufacture was on or after July 18, 2012, may not have a characteristic level for CO exceeding the following emission standard in g/kN rated output:
NO— X Engines of a type or model for which the date of manufacture was on or after July 18, 2012, may not have a characteristic level for NOX engines exceeding the following emission standard in g/kN rated output:
Notes, amendments, and revision history
Authority
Authority: 42 U.S.C. 7401-7671q.
Source
Source: 87 FR 72351, Nov. 23, 2022, unless otherwise noted.