40 CFR 87.31 - Standards for exhaust emissions.

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§ 87.31 Standards for exhaust emissions.
(a) Exhaust emissions of smoke from each in-use aircraft gas turbine engine of Class T8, beginning February 1, 1974, shall not exceed: Smoke number of 30.
(b) Exhaust emissions of smoke from each in-use aircraft gas turbine engine of class TF and of rated output of 129 kilonewtons thrust or greater, beginning January 1, 1976, shall not exceed:
SN=83.6(r0)−0.274(r0 is in kilonewtons).
(c) The standards set forth in paragraphs (a) and (b) of this section refer to exhaust smoke emissions emitted during operations of the engine as specified in the applicable section of subpart H of this part, and measured and calculated in accordance with the procedures set forth in this subpart.
[47 FR 58470, Dec. 30, 1982, as amended at 48 FR 2718, Jan. 20, 1983]
Beta! The text on the eCFR tab represents the unofficial eCFR text at ecfr.gov.
§ 87.31 Standards for exhaust emissions.

(a) Exhaust emissions of smoke from each in-use aircraft gas turbine engine of Class T8, beginning February 1, 1974, shall not exceed: Smoke number of 30.

(b) Exhaust emissions of smoke from each in-use aircraft gas turbine engine of class TF and of rated output of 129 kilonewtons thrust or greater, beginning January 1, 1976, shall not exceed:

SN = 83.6(r0)−0.274 (r0 is in kilonewtons).

(c) The standards set forth in paragraphs (a) and (b) of this section refer to exhaust smoke emissions emitted during operations of the engine as specified in the applicable section of subpart H of this part, and measured and calculated in accordance with the procedures set forth in this subpart.

[47 FR 58470, Dec. 30, 1982, as amended at 48 FR 2718, Jan. 20, 1983]

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United States Code

Title 40 published on 2015-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 87 after this date.

  • 2015-07-29; vol. 80 # 145 - Wednesday, July 29, 2015
    1. 80 FR 45131 - Proposed Finding That Greenhouse Gas Emissions From Aircraft Cause or Contribute to Air Pollution That May Reasonably Be Anticipated To Endanger Public Health and Welfare and Advance Notice of Proposed Rulemaking; Notice of Updates to Public Hearing
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      ENVIRONMENTAL PROTECTION AGENCY
      Updates to public hearing.
      The EPA will hold a public hearing on August 11, 2015 in Washington, DC starting at 10 a.m. local time.
      40 CFR Parts 87 and 1068