This document adopts as a final rule, with some changes, the interim rule amending the Customs Regulations that was published in the Federal Register on February 22, 1996, as T.D. 96-18. The interim rule implemented certain statutory changes to the Customs laws contained in the Customs modernization portion of the North American Free Trade Agreement Implementation Act regarding recordkeeping for merchandise transported by pipeline and duty-free withdrawals from Customs bonded warehouses of aircraft turbine fuel. The interim rule also clarified the procedures applicable to aircraft turbine fuel withdrawn from a bonded warehouse for certain duty-free use and then commingled with other lots of fuel before being so used.