Which of the following items must be clearly visible on the interior package or reproduced on the overpack?

• A. Manufacturer's name
• B. Proper shipping names, UN numbers, labels, and special handling instructions
• C. Lot number
• D. Temperature rating

Answer: (B)

Hazard communication and identification for dangerous goods in air transport require that essential details used to recognize and safely handle the shipment be clearly visible on the inner packaging or reproduced on the overpack. This includes the proper shipping name and UN number, which tell exactly what substance is involved and its hazard category, the appropriate hazard labels, and any special handling instructions. Together these elements provide immediate, unambiguous information for anyone handling, loading, or responding to incidents, even if the outer packaging is damaged. The other options—manufacturer’s name and lot number, or a temperature rating—are not universally required for the hazard communication on the inner packaging. Temperature ratings apply only to certain goods and are not a universal marking on all inner packaging.