19 CFR §141.15

1. (a)When appropriate. If the person desiring to make entry is unable to present a bill of lading, air waybill, or other evidence of right to make entry in accordance with § 141.11, the port director may accept a bond for the production of a bill of lading or air waybill under the provisions of section 484(c), Tariff Act of 1930, as amended (19 U.S.C. 1484(c)). The bond shall be for the production of a bill of lading or air waybill, unless the person making entry intends to produce a carrier's certificate or certified duplicate bill of lading or air waybill. In that case, no bond is required because section 484(c) does not apply to entries made on a carrier's certificate or certified duplicate bill of lading or air waybill. If the port director is in doubt as to the propriety of accepting entry on a bond for the production of a bill of lading or air waybill, he shall request authority to do so from the Commissioner of Customs.
2. (b)Form. The bond shall be on Customs Form 301 and contain the bond conditions set forth in § 113.69 of this chapter.
3. (c)Documents acceptable to satisfy bond. A bond given for the production of a bill of lading or air waybill shall be considered as canceled upon production of a bill of lading or air waybill, and may be considered as satisfied but shall not be canceled upon the production of a carrier's certificate or certified duplicate bill of lading or air waybill.