CFR›Title 19›Chapter I›Part 191›Subpart N ContainsSections 191.141–191.144CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart N—Foreign-Built Jet Aircraft Engines Processed in the United States Sections 191.141 § 191.141 Drawback allowance. 191.142 § 191.142 Procedure. 191.143 § 191.143 Drawback entry. 191.144 § 191.144 Refund of duties. Previous M Subpart M—Materials for Construction and Equipment of Vessels and Aircraft Built for Foreign Ownership and Account Next O Subpart O—Merchandise Exported From Continuous Customs Custody