An aircraft belonging to a resident of the U.S. which is taken to a foreign area for non-commercial purposes and then returned to the U.S. by the resident shall be admitted under the conditions and procedures set forth in Sec. 148.32 of this chapter. Repairs made abroad, and accessories purchased abroad shall be included in the baggage declaration as required by Sec. 148.32(c), and may be subject to entry and payment of duty as provided in Sec. 148.32.