40 CFR § 92.401
Applicability
June 9, 2020
The requirements of this subpart are applicable to manufacturers and remanufacturers of locomotives and locomotive engines subject to the provisions of subpart A of this part. The requirement to report emission-related defects affecting a given class or category of locomotives or locomotive engines applies for eight years from the end of the year in which such locomotives or locomotive engines were manufactured, or remanufactured, as applicable.