Regulations last checked for updates: Feb 12, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
All TitlesTitle 40Chapter IPart 1042Subpart F - Subpart F—Test Procedures
View all text of Subpart F [§ 1042.501 - § 1042.525]
§ 1042.520 - What testing must I perform to establish deterioration factors?

Sections 1042.240 and 1042.245 describe the required methods for testing to establish deterioration factors for an engine family.

authority: 42 U.S.C. 7401-7671q.
source: 73 FR 37243, June 30, 2008, unless otherwise noted.
cite as: 40 CFR 1042.520
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