49.33—Eligibility for recording: general requirements.
A conveyance is eligible for recording under this subpart only if, in addition to the requirements of §§ 49.11, 49.13, and 49.17, the following requirements are met:
(b)
It describes the aircraft by make and model, manufacturer's serial number, and United States registration number, or other detail that makes identification possible;
(c)
It is an original document, or a duplicate original document, or if neither the original nor a duplicate original of a document is available, a true copy of an original document, certified under § 49.21 ;
(e)
It is accompanied by the recording fee required by § 49.15, but there is no fee for recording a conveyance named in § 49.31(b).