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Regulations last checked for updates: May 14, 2025
Title 40 - Protection of Environment last revised: Apr 14, 2028
All Titles
Title 40
Chapter I
Part 1031
Subpart B - Subpart B—Emission Standards and Measurement Procedures
§ 1031.30 - Overview of emission standards and general requirements.
§ 1031.40 - Turboprop engines.
§ 1031.50 - Subsonic turbojet and turbofan engines at or below 26.7 kN thrust.
§ 1031.60 - Subsonic turbojet and turbofan engines above 26.7 kN thrust.
§ 1031.90 - Supersonic engines.
§ 1031.130 - Derivative engines for emissions certification purposes.
§ 1031.140 - Test procedures.
authority:
42 U.S.C. 7401-7671q.
source:
87 FR 72351, Nov. 23, 2022, unless otherwise noted.
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