AMS Air manifests have to be electronically filed with the CBP 4 hours before the arrival of the inbound carrier. The master air waybill record also needs to be transmitted for all non-consolidated shipments. Carriers with consolidated shipments have to electronically transmit all information required that appertains to the master waybill and associated house airwaybills unless the information has already been submitted by another party.
If an inbound carrier decides to transport merchandise reported in a single consolidated air waybill on two or more aircraft as a split shipment, they will have to submit additional information for every house air waybill in the consolidation. Unless detailed house shipment data has been furnished to the CBP by another party, the carrier will need to provide that information. The CBP has to receive the information no later than four hours before the carrier arrives in the US. For aircraft departing from foreign locations close to the United States, the CBP has to receive the cargo data no later than when the plane departs for the US.