In accordance with ATP, Annex 1, Appendix 1, paragraphs 1(b), and Appendix 2, paragraphs 29(c) and 49(b) and (d), considered in combination, certificates will be valid for periods as follows:
(a) For equipment which passes a test, 6 years.(b) For serially-produced equipment of which 1 percent have passed a test, and all units have been inspected and passed such inspection, 6 years.(c) For renewal of a U.S. ATP certificate which is nearing its expiration date, where the equipment has passed an inspection but has not been tested, 3 years.(d) For equipment currently certified according to a U.S. ATP certificate, where the equipment has been transferred from one domestic owner to another and the equipment has passed an inspection, 3 years or the date of expiration of the current U.S. ATP certificate, whichever gives the later expiration date on the new U.S. ATP certificate.(e) For equipment currently certified according to a Foreign-ATP certificate, where the equipment has been transferred from a foreign owner to a domestic owner and the equipment has passed an inspection, 3 years or the date of expiration of the foreign certificate, whichever gives the later expiration date on the newly issued U.S. ATP certificate.