Air cargo handling covers everything that happens to a consignment between arriving at the airport and being loaded onto an aircraft, and the reverse process at destination. It includes acceptance, documentation checks, security screening, storage, building cargo onto units, transfer to the ramp, loading, and breaking units down again on arrival.
Most of the time a shipment spends in the air freight chain is spent here, on the ground, not in the air. A flight might take eight hours. The handling either side of it routinely takes longer.
The gate everything passes through is a check called ready for carriage.
What Does Ready for Carriage Mean?
Ready for carriage is the check the handler performs before an airline will accept a shipment, confirming that the cargo, the documentation and the security status all match and that nothing prevents the consignment from flying.
The check establishes several things at once.
- That the shipment has been security cleared
- That the documentation matches the physical cargo, including piece count, weight and description
- That packing and labelling meet the requirements for the cargo type
- That no embargo or operational restriction applies to the routing
- That the details reconcile against the original booking
A shipment that fails any of these is not accepted. It waits, or it is returned, and it misses the flight it was booked on.
This is why the concept matters to shippers and forwarders rather than only to handlers. Ready for carriage is the moment at which everything done upstream is tested, and it is the single most common point of failure in air freight.
The Air Cargo Handling Process, Step by Step
The table below sets out the export sequence and who is responsible at each stage.
| Stage | What happens | Who does it |
|---|---|---|
| Delivery to terminal | Cargo arrives at the cargo terminal by road, with documentation | Shipper or forwarder |
| Acceptance | Ready for carriage check, documents reconciled against physical cargo | Ground handler |
| Security screening | Screening by x-ray, explosive trace detection or other approved method | Handler or certified screening facility |
| Storage and staging | Cargo held until the build up plan is issued | Ground handler |
| Build up | Cargo built onto pallets or into containers according to the plan | Ground handler, or the forwarder on shipper-built units |
| Ramp transfer | Completed units moved airside to the aircraft | Ground handler |
| Loading | Units loaded and secured in the hold according to the load plan | Ground handler and airline |
| Flight | Cargo in transit | Airline |
| Breakdown | Units opened, cargo sorted by air waybill and moved to import storage | Ground handler at destination |
| Customs and release | Clearance completed, cargo released to the consignee or its agent | Broker, handler, consignee |
The import sequence mirrors the export one in reverse, with the addition of customs clearance before release.
Build Up and Breakdown
Build up is the process of assembling loose cargo onto a ULD, whether that is a pallet with a net or a container. The handler works from a build up plan issued by the airline, which specifies what goes onto which unit for which flight.
Breakdown is the reverse at destination. Units are opened, cargo is sorted by air waybill number, and consignments are moved into import storage to await clearance and collection.
Both processes are where physical damage and mis-sorts occur, and both are constrained by how much space and how many working positions the terminal has.
Why Do Shipments Get Rejected at Acceptance?
Shipments are refused at acceptance when the documentation, the packing or the security status does not satisfy the ready for carriage check.
The recurring causes are:
- Declared weight or piece count that does not match the physical cargo
- Missing, incomplete or inconsistent documentation
- Packing or labelling that does not meet the requirement for the cargo type
- Missing or incorrect special handling codes on the air waybill
- Dangerous goods presented without the correct declaration, marks and labels
- Special cargo failing its own acceptance checklist, such as a live animal container that does not meet the live animals regulations
- Arriving after the cut-off time
Most of these are documentation problems rather than cargo problems, which is why the paperwork is where forwarders concentrate their attention.
Why Do Cut-Off Times Matter So Much?
Cut-off is the latest point at which cargo can be delivered to the terminal and still make a given flight, and it exists because acceptance, screening, storage and build up all take time that has to happen before the aircraft is loaded.
Cut-offs vary by airline, airport and cargo type, and they are earlier for cargo needing additional processing. Dangerous goods, live animals, temperature controlled consignments and anything requiring specialised screening all need more lead time than general cargo.
Missing a cut-off does not usually mean a short delay. It means the next available flight, which on a thin routing can be days rather than hours, and for temperature controlled cargo that can consume the whole rated window of a passive container.
Who Actually Does the Handling?
Three separate parties are often confused with each other.
| Party | Role |
|---|---|
| The airline | Owns the cargo contract with the forwarder and issues the build up and load plans |
| The ground handling agent | Carries out acceptance, screening, storage, build up, breakdown and loading on the airline’s behalf |
| The terminal operator | Owns or operates the cargo facility itself, which may or may not be the same company as the handler |
At most airports the airline does not handle its own cargo. It contracts a ground handling agent, and at many stations several airlines use the same handler.
The relationship between airline and handler is governed by the IATA Standard Ground Handling Agreement, which sets out in a standard form what services are provided and on what terms. Alongside it, Cargo iQ provides the quality framework the industry uses to define and measure handling performance against agreed milestones.
For a shipper this matters because the handler, not the airline, is usually the party physically in contact with the cargo, and handling capability at a transfer point is frequently what determines whether a routing works.
What Makes Special Cargo Different?
Special cargo requires handling procedures beyond the general process, and each category has its own acceptance checks, storage requirements and trained personnel.
- Dangerous goods require a shipper’s declaration, correct marks and labels, segregation in storage and specific loading rules
- Live animals require a species-appropriate container, ventilation, temperature control and handling under the live animals regulations
- Temperature controlled cargo requires powered positions for active units, temperature controlled storage and minimised exposure on the apron
- Valuables require secure storage, restricted access and documented chain of custody
- Perishables require cool storage and priority handling to limit dwell
- Oversized and heavy cargo requires specific equipment, loading positions and sometimes a dedicated aircraft
Not every station handles every category. Checking handling capability at every point on a routing, including transfer airports, is part of designing a workable lane.
Questions About Air Cargo Handling
What is air cargo handling?
Air cargo handling is everything that happens to a consignment on the ground at the airport, including acceptance, documentation checks, security screening, storage, building cargo onto units, ramp transfer, loading, and breaking units down at destination.
What does ready for carriage mean?
Ready for carriage is the check performed before an airline accepts a shipment. It confirms the cargo has been security cleared, that the documentation matches the physical consignment, that packing and labelling are correct, and that no embargo or restriction prevents it from flying.
What is build up in air cargo?
Build up is the process of assembling loose cargo onto a pallet or into a container to form a unit load device, following a build up plan issued by the airline for a specific flight.
What is breakdown in air cargo?
Breakdown is the reverse process at destination. Unit load devices are opened, the cargo is sorted by air waybill number, and consignments are moved to import storage to await customs clearance and collection.
What is a ground handling agent?
A ground handling agent is the company that performs handling services on behalf of an airline, including acceptance, screening, storage, build up, loading and breakdown. At most airports the airline contracts a handler rather than handling cargo itself.
Why did my shipment miss its flight?
The most common reasons are arriving after the cut-off time, or failing the ready for carriage check because the documentation did not match the cargo. Both mean the shipment waits for the next available flight.
How long before a flight does cargo need to arrive?
Cut-off times vary by airline, airport and cargo type, and cargo requiring additional processing such as dangerous goods or temperature controlled consignments needs more lead time than general cargo. The forwarder or carrier confirms the applicable cut-off for the specific booking.
