CFR›Title 40›Chapter I›Part 1054›Subpart E ContainsSection 1054.401CorpusDaily eCFRDisplayed edition2026-09-09Last updated2026-09-09 Subpart E—In-use Testing Sections 1054.401 § 1054.401 General provisions. Previous D Subpart D—Production-line Testing Next G Subpart G—Special Compliance Provisions