49 C.F.R. § 229.19 Prior waivers.
Title 49 - Transportation
All waivers of every form and type from any requirement of any order or regulation implementing the Locomotive Inspection Act, applicable to one or more locomotives except those propelled by steam power, shall lapse on August 31, 1980, unless a copy of the grant of waiver is filed prior to that date with the Office of Safety (RRS–23), Federal Railroad Administration, Washington, DC 20590.
Title 49: Transportation
PART 229—RAILROAD LOCOMOTIVE SAFETY STANDARDS
Subpart A—General
§ 229.19 Prior waivers.