Dangerous goods are substances or articles that may present a risk to people, property, transport equipment or the environment. They are not limited to industrial chemicals or explosives. Lithium batteries, aerosols, paints, adhesives, solvents, compressed gases, dry ice and certain aircraft components can all be regulated during transportation. The applicable requirements depend on the mode of transport. The IATA Dangerous Goods Regulations are used for airfreight and cover classification, packaging, marking, labelling, documentation and airline acceptance. ADR governs dangerous goods transported by road, while the IMDG Code applies to packaged dangerous goods moving by sea. A shipment prepared for road transport is not automatically compliant for air or sea transportation. Correct declaration is essential. Dangerous goods must be identified using the correct UN number, Proper Shipping Name, hazard class, packing group and quantity. The packaging, labels and supporting documents must correspond with the goods being presented. An incorrect or incomplete declaration can result in shipment rejection, costly delays, enforcement action and, most importantly, serious safety risks. The shipper is responsible for correctly identifying, classifying, packaging, marking, labelling and documenting the goods. A Safety Data Sheet can provide important transport information, but it must relate to the exact product and should not be treated as the complete compliance assessment. Responsibility for the accuracy of the shipment information remains with the shipper. The freight forwarder coordinates the movement, checks the information provided, reviews routing and carrier restrictions, and screens for potentially hidden or incorrectly declared dangerous goods. The ground handling agent checks the physical shipment and documentation during acceptance, ensuring that packages are correctly marked, labelled and free from damage or leakage. The airline makes the final decision on whether the shipment can be accepted. It must ensure that dangerous goods are checked, handled, segregated, loaded and communicated to the aircraft commander correctly. Each organisation must also ensure that employees performing dangerous-goods functions are appropriately trained and competent. For time-critical and AOG shipments, compliance should be considered from the beginning—not after the cargo reaches the airport. Early identification, accurate documentation and suitable packaging allow the safest and fastest available route to be selected. Aero Time Critical coordinates urgent dangerous-goods movements across air, road and sea. Send us the product details, current Safety Data Sheet, quantity, packaging information, origin, destination and required delivery time so that we can assess the available transport options. *This article provides general information only. Dangerous-goods regulations and carrier restrictions can change, and every shipment must be assessed against the current applicable requirements.*