Section 129.101 - Purpose and definition(a) This subpart requires a foreign person or foreign air carrier operating a U.S. registered airplane in common carriage to support the continued airworthiness of each airplane. These requirements may include, but are not limited to, revising the maintenance program, incorporating design changes, and incorporating revisions to Instructions for Continued Airworthiness.Amdt. 129-43, 72 FR 63413, Nov. 8, 2007, as amended by Docket FAA-2018-0119, Amdt. 129-53, 83 FR 9174, Mar. 5, 2018 As amended by Docket FAA-2018-0119, Amdt. 129-53, 83 FR 9174, 3/5/2018