Which document is specifically issued by an air carrier?

The airway bill is specifically issued by an air carrier and serves as a critical document in the transportation of goods by air. It functions as a receipt for the goods being shipped and contains essential details such as the sender and recipient's information, a description of the cargo, and terms of transport. The airway bill provides proof that the carrier has accepted the goods for transportation, and it also serves to outline the particulars of the shipment, including weight and dimensions.

In contrast, a commercial invoice is provided by the seller to the buyer detailing the sold goods and the terms of the sale, but it is not issued by the carrier. The bill of lading is typically associated with sea freight and serves as a document of title, contract of carriage, and receipt of goods, which again, does not pertain specifically to air transport. Similarly, the shipper's export declaration is a document required by government authorities for export control but is not issued by the air carrier itself. The airway bill is unique as it is exclusively tied to air transportation, marking it as the correct choice.