What are Dangerous Goods?

Dangerous goods refer to substances or items that possess a risk to health, safety, property, or the environment. These can include materials that are explosive, flammable, toxic, corrosive, or otherwise hazardous. The classification of dangerous goods is essential in aviation safety, as specific protocols and regulations govern their handling, packaging, and transportation to prevent accidents and ensure the safety of all passengers and crew on board.

In contrast, the other options describe items or conditions that don't accurately align with the definition of dangerous goods. Items that are usually allowed on aircraft do not encompass the risks or hazards associated with dangerous goods. Passenger belongings subject to duty refer to customs regulations and do not relate to health or safety hazards. Lastly, baggage that exceeds weight limits pertains to airline policies on luggage but is unrelated to the classification of dangerous goods. Understanding this distinction is crucial in managing safety protocols in aviation.