Section 49.53 - Eligibility for recording: general requirements(a) 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:(1) It affects any aircraft engine, propeller, appliance, or spare part, maintained by or on behalf of an air carrier certificated under 49 U.S.C. 44705 ;(2) It contains or is accompanied by a statement by the air carrier certificated under that section;(3) It specifically describes the location or locations of each aircraft engine, propeller, appliance, or spare part covered by it; and(4) It is accompanied by the recording fee required by § 49.15 , but there is no fee for recording a conveyance named in § 49.51(c) .(b) The conveyance need only describe generally, by type, the engines, propellers, appliances, or spare parts covered by it.Doc. No. 1996, 29 FR 6486, May 19, 1964, as amended by Amdt. 49-5, 35 FR 802, Jan. 21, 1970; Amdt. 49-10, 70 FR 246 , Jan. 3, 2005