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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Oct 30, 2025
All Titles
Title 14
Chapter I
Part 34
Subpart C - Subpart C—Exhaust Emissions (New Aircraft Gas Turbine Engines)
§ 34.20 - Applicability.
§ 34.21 - Standards for exhaust emissions.
§ 34.23 - Exhaust Emission Standards for Engines Manufactured on and after July 18, 2012.
§ 34.25 - Non-volatile particulate emissions standards (nvPM).
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