§ 1031.90 - Supersonic engines.  


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  • § 1031.90 Supersonic engines.

    The following standards apply to new engines installed in supersonic airplanes:

    (a) 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:

    SN = 83.6·rO0.274

    (b) [Reserved]

    (c) 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:

    HC = 140·0.92rPR

    (d) 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:

    CO = 4550·rPR−1.03

    (e) NOX 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:

    NOX = 36+2.42·rPR