40 CFR 87.89 - Compliance with smoke emission standards.
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Compliance with each smoke emission standard shall be determined by comparing the plot of SN as a function of power setting with the applicable emission standard under this part. The SN at every power setting must be such that there is a high degree of confidence that the standard will not be exceeded by any engine of the model being tested. An acceptable alternative to testing every engine is described in Appendix 6 to ICAO Annex 16 (incorporated by reference in § 87.8).
[70 FR 69687, Nov. 17, 2005]
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.