An air waybill (AWB) is the contract of carriage, cargo receipt and tracking reference for every air shipment. The airline issues a master air waybill (MAWB) to the freight forwarder, and the forwarder issues a house air waybill (HAWB) to each shipper. Unlike a sea bill of lading, an AWB is not a document of title, so the named consignee can collect the cargo.
Most shippers never see the AWB until something goes wrong: a consignee name that does not match the permit, a weight that differs from the scale at the cargo terminal, or a missing handling code for dangerous goods. Each of those can keep cargo on the ground at KLIA while the flight leaves. This guide covers how the document is structured, how master and house waybills fit together, and the checks that keep your cargo on the flight you booked.
What Does an Air Waybill Do?
The AWB does four jobs at once, and each one matters at a different point in the journey:
- Contract of carriage: it records the agreement between the shipper and the carrier, including the carrier’s conditions of contract printed on the reverse.
- Receipt for the goods: it confirms the number of pieces, weight and condition of cargo accepted at the terminal.
- Handling instructions: special handling codes, temperature requirements and dangerous goods declarations travel with it.
- Customs and tracking reference: the AWB number links the cargo to its manifest, customs declaration and tracking events.
Because the AWB is non-negotiable, it cannot be endorsed to transfer ownership the way an original bill of lading can. Release is to the consignee named on the document, which is why the consignee field causes so many problems.
MAWB vs HAWB: How Consolidated Air Cargo Is Documented
Most business air cargo moves as part of a forwarder consolidation. The forwarder books space with the airline under one master waybill and combines several shippers’ cargo under it. Each shipper receives their own house waybill.
| Master Air Waybill (MAWB) | House Air Waybill (HAWB) | |
|---|---|---|
| Issued by | Airline or its appointed agent | Freight forwarder |
| Issued to | The forwarder (as shipper) | The actual shipper |
| Covers | The whole consolidation on that flight | One shipper’s consignment |
| Consignee | Usually the forwarder’s agent at destination | The actual buyer or receiver |
| Numbering | 11 digits: airline prefix + serial | Forwarder’s own reference format |
| Used for | Airline handling, manifest, terminal release | Release to the final consignee, invoicing |
If you ship a full pallet load directly with the airline, there may be only a MAWB. For smaller loads, consolidation under a MAWB with your own HAWB is usually cheaper, because the forwarder buys space at better rates and spreads the minimum charges.
Reading an AWB Number
An AWB number has 11 digits. The first three are the airline prefix, which identifies the carrier (Malaysia Airlines cargo, for example, uses 232). The next eight are the serial number, the last of which is a check digit. When you track a shipment, use the full 11 digits on the airline’s cargo portal. If you only have the house waybill reference, your forwarder tracks it for you.
The Fields That Matter Most
An AWB has more than 40 boxes, but a handful cause almost every delay:
- Shipper and consignee: full legal names, addresses and contact numbers. They must match the commercial invoice and any permit exactly.
- Airport of departure and destination: for domestic cargo, typically KLIA to Kota Kinabalu, Kuching, Miri or another East Malaysian airport.
- Number of pieces and gross weight: these are checked against the terminal scale at acceptance.
- Dimensions and chargeable weight: the airline charges the higher of actual and volumetric weight. Read our air freight shipping guide for the calculation.
- Nature and quantity of goods: a precise description, not “general goods” or “spare parts”.
- Handling information: special handling codes, such as perishables or dangerous goods, and any temperature instructions.
- Charges: prepaid or collect, plus any other charges due to the carrier or agent.
AWB Errors That Keep Cargo on the Ground
| Error | What happens | How to prevent it |
|---|---|---|
| Consignee name differs from the permit or invoice | Release or clearance is refused until corrected | Copy names from the permit, character for character |
| Declared weight below the terminal scale | Cargo is re-weighed and re-billed, and may miss the flight | Weigh packed cargo, including the pallet |
| Vague goods description | Security or customs hold for inspection | Describe what the item is and what it is made of |
| Undeclared dangerous goods (batteries, aerosols, perfume) | Cargo rejected; possible penalties | Check every SKU against the airline’s DG rules and MSDS |
| Piece count mismatch | Shipment split across flights or held | Label every carton “1 of N” before pickup |
Hidden dangerous goods are the most common surprise. Many everyday products are restricted on aircraft. Our guide on what you can and cannot ship by air freight covers the items that are most often missed.
e-AWB: The Paperless Air Waybill
Most airlines now accept an electronic air waybill (e-AWB), where the contract is concluded through electronic data rather than a printed, signed form. For shippers, the practical change is small: the data still has to be right. The benefit is speed. Corrections made before acceptance are faster, and the data flows straight into the airline’s and the customs system’s manifests. Paper copies may still be requested for some cargo types or destinations.
Air Waybill vs Bill of Lading
| Air waybill | Bill of lading (sea) | |
|---|---|---|
| Document of title | No | Yes (negotiable original) |
| Release of cargo | To the named consignee | Against the original B/L, or telex/seaway release |
| Typical transit it covers | Hours to a few days | Days to weeks |
| Use in trade finance | Limited: the bank is often named as consignee | Common: title passes with the document |
This difference matters if you sell on letter-of-credit terms. Because the consignee can collect air cargo without presenting the document, banks usually require to be named as consignee themselves.
Checklist Before the AWB Is Issued
- Commercial invoice and packing list match: names, addresses, piece count and weights.
- Permits obtained for controlled or agricultural goods, with the consignee named exactly as on the permit.
- MSDS available for any chemical product, battery or aerosol, and dangerous goods declared.
- Cargo weighed and measured after packing, including the pallet and wrapping.
- Every piece labelled with consignee, destination and “1 of N”.
- Payment terms (prepaid or collect) agreed with the buyer.
How De Hubs Handles Air Waybills
On every air freight shipment between West and East Malaysia, De Hubs prepares the air waybill and checks it against your invoice, packing list, permits and, where needed, the MSDS. Your cargo is weighed to confirm the chargeable weight before it is booked on a passenger aircraft or freighter from KLIA. To see what happens to the cargo once the AWB is issued, read our guide to how air cargo moves through KLIA.
Frequently Asked Questions
What is an air waybill?
An air waybill (AWB) is the transport document for air cargo. It is the contract of carriage between the shipper and the airline, the receipt for the goods, and the reference used for tracking, handling and customs. Unlike a sea bill of lading, it is not a document of title.
What is the difference between MAWB and HAWB?
The master air waybill (MAWB) is issued by the airline to the freight forwarder and covers the whole consolidated shipment. The house air waybill (HAWB) is issued by the forwarder to each individual shipper inside that consolidation.
How do I track cargo with an AWB number?
An AWB number has 11 digits: a 3-digit airline prefix followed by an 8-digit serial number. Enter it on the airline’s cargo tracking page, or ask your forwarder, who can also track the house air waybill.
Can an air waybill be amended after the flight?
Some fields can be corrected through the airline or forwarder, usually for a fee, but consignee and weight corrections after departure can delay collection and clearance. It is far cheaper to check every field before the AWB is issued.
Who prepares the air waybill?
The airline or its appointed agent issues the MAWB, usually prepared by the freight forwarder from the shipper’s instructions. De Hubs prepares the air waybill for its air freight customers and checks it against the invoice and packing list.