§ 44109. Reporting transfer of ownership
(a)
 Filing Notices.— 
A person having an ownership interest in an aircraft for which a certificate of registration was issued under section 
44103 of this title shall file a notice with the Secretary of the Treasury that the Secretary requires by regulation, not later than 15 days after a sale, conditional sale, transfer, or conveyance of the interest.
(b)
 Exemptions.— 
The Secretary—