Regulations last checked for updates: Jun 06, 2026

Title 14 - Aeronautics and Space last revised: May 27, 2026
All TitlesTitle 14Chapter IPart 34Subpart H - Subpart H—Test Procedures and Compliance Demonstration for Non-Volatile Particulate Matter Emissions
authority: 42 U.S.C. 4321
source: Docket No. 25613, 55 FR 32861, Aug. 10, 1990, unless otherwise noted.
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