A House Air Waybill (HAWB) is a document issued by a freight forwarder to a shipper as a contract of carriage for the transportation of goods by air. The HAWB acts as a receipt for the goods and evidence of the contract of carriage, but it is not a document of title to the goods. As a result, the HAWB is non-negotiable.

The HAWB is used in consolidation services, where a freight forwarder combines multiple shipments into a single larger shipment for transportation. In this case, the freight forwarder becomes a deemed carrier and enters into contracts with one or more airlines, often using more than one mode of transportation. The contract of carriage between the freight forwarder and airline is called a Master Air Waybill (MAWB).

The HAWB contains two reference numbers: one is the Master Air Waybill number, located on the top left of the document with eleven digits, and the other is the HAWB number, located on the top right. The HAWB number is unique to each freight forwarder and is used by the customer to trace the shipment with the freight forwarder.

In summary, a House Air Waybill is a document used in consolidation services for the transportation of goods by air. It acts as a receipt for the goods and evidence of the contract of carriage, but is not a document of title to the goods. It contains two reference numbers: the Master Air Waybill number and the HAWB number, which is unique to each freight forwarder.