14 CFR § 47.71 - Duration of Certificate; change of status.
(a) A Dealer's Aircraft Registration Certificate, AC Form 8050-6, expires 1 year after the date it is issued. Each additional certificate expires on the date the original certificate expires.
(1) A change of name;
(2) A change of address;
(3) A change that affects status as a citizen of the United States; or
(4) The discontinuance of business.