A type-approval or type-approval renewal is valid for a period of 3 years from the date of the Federal Register notice issued pursuant to Sec. 600.1510, subject to the revocation process at Sec. 600.1514. All MTUs, EMTUs, MCSs, and bundles with valid type-approvals on January 23, 2015 will continue to be type-approved. However, if the type-approval date is more than 3 years old, the type-approval will expire on February 23, 2015. The type-approval holder may request a type-approval renewal as provided in Sec. 600.1513.