U.S. Code
Regulations
Constitution
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
x
Search
Search guide
U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 1048
Subpart E - Subpart E—Testing In-use Engines
§ 1048.401 - What testing requirements apply to my engines that have gone into service?
§ 1048.405 - How does this program work?
§ 1048.410 - How must I select, prepare, and test my in-use engines?
§ 1048.415 - What happens if in-use engines do not meet requirements?
§ 1048.420 - What in-use testing information must I report to EPA?
§ 1048.425 - What records must I keep?
Download the GovRegs app!
