14 CFR § 47.41 - Duration and return of Certificate.
(a) Each Certificate of Aircraft Registration, AC Form 8050-3, issued by the FAA under this subpart is effective, unless registration has ended by reason of having been revoked, canceled, expired, or the ownership is transferred, until the date upon which one of the following events occurs:
(2) The aircraft is totally destroyed or scrapped.
(3) The holder of the certificate loses his U.S. citizenship.
(4) 30 days have elapsed since the death of the holder of the certificate.
(6) If the owner is a corporation other than a corporation which is a citizen of the United States -
(i) The corporation ceases to be lawfully organized and doing business under the laws of the United States or any State thereof; or
(7) If the trustee in whose name the aircraft is registered -
(i) Loses U.S. citizenship;
(iii) In any manner ceases to act as trustee and is not immediately replaced by another who meets the requirements of § 47.7(c).
(2) Within 60 days after the death of the holder of the certificate, by the administrator or executor of his estate, or by his heir-at-law if no administrator or executor has been or is to be appointed; or
(3) Within 21 days of the termination of the registration, by the holder of the Certificate of Aircraft Registration in all other cases mentioned in paragraph (a) of this section, except in the case of expired certificates, the holder must destroy the expired certificate.
(4) If the certificate is not available for return, as directed in paragraph (b) of this section, a statement describing the aircraft and stating the reason the certificate is not available must be submitted to the Registry within the time required by paragraph (b) of this section.