CFR›Title 19›Chapter I›Part 190›Subpart N ContainsSections 190.141–190.144CorpusDaily eCFRDisplayed edition2026-08-07Last updated2026-08-07 Subpart N—Foreign-Built Jet Aircraft Engines Processed in the United States Sections 190.141 § 190.141 Drawback allowance. 190.142 § 190.142 Procedure. 190.143 § 190.143 Drawback entry. 190.144 § 190.144 Refund of duties. Previous M Subpart M—Materials for Construction and Equipment of Vessels and Aircraft Built for Foreign Account and Ownership Next O Subpart O—Merchandise Exported From Continuous CBP Custody