14 CFR § 48.105
Requirement to maintain current information
July 13, 2020
(a) The holder of a Certificate of Aircraft Registration must ensure that the information provided under §48.100 remains accurate.
(b) The holder of a Certificate of Aircraft Registration must update the information using the web-based small unmanned aircraft registration system within 14 calendar days of the following:
(1) A change in the information provided under §48.100.
(2) When aircraft registration requires cancellation for any reason including sale or transfer, destruction, or export.