Section 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.(b) The holder of a Dealer's Aircraft Registration Certificate must immediately notify the Registry of any of the following-(3) A change that affects status as a citizen of the United States; or(4) The discontinuance of business.31 FR 4495, Mar. 17, 1966, as amended by Amdt. 47-29, 75 FR 41983 , July 20, 2010