14 CFR 49.51 : Aeronautics And Space (§ 1.1 To Parts 1311-1399) — (§ 1.1 To Parts 50-59) — Federal Aviation Administration, Department Of Transportation (§ 1.1 To Parts 50-59) — Aircraft (§ 21.1 To Parts 50-59) — Recording Of Aircraft Titles And Security Documents (§ 49.1 To § 49.63) — Encumbrances Against Air Carrier Aircraft Engines, Propellers, Appliances, And Spare Parts (§ 49.51 To § 49.55) — Applicability.

This subpart applies to the recording of the following kinds of conveyances:

(a) Any lease, a notice of tax lien or other lien (except a notice of Federal tax lien referred to in § 49.17 (a), and any mortgage, equipment trust, contract of conditional sale, or other instrument executed for security purposes, which affects title to, or any interest in, any aircraft engine, propeller, or appliance maintained by or on behalf of an air carrier certificated under 49 U.S.C. 44705 for installation or use in aircraft, aircraft engines, or propellers, or any spare parts, maintained at a designated location or locations by or on behalf of such an air carrier.

(b) An assignment or amendment of, or supplement to, an instrument named in paragraph (a) of this section.

(c) A release, cancellation, discharge, or satisfaction of a conveyance named in paragraph (a) or (b) of this section.