What is the maximum amount of dry ice allowed in a cargo compartment?

The maximum amount of dry ice allowed in a cargo compartment is determined by safety regulations concerning the potential hazards associated with carbon dioxide sublimation. Dry ice, when it sublimates, releases carbon dioxide gas, which can displace oxygen in a confined space, leading to asphyxiation hazards.

The limit of 220 pounds is set to ensure adequate ventilation and reduce the risk of carbon dioxide buildup. This limit allows for a sufficient quantity of dry ice for transport while maintaining safety in the cargo area. It also aligns with aviation regulations and safety protocols established by authorities such as the International Air Transport Association (IATA) and the Federal Aviation Administration (FAA), which recognize the need for specific weight limitations to prevent dangerous situations.

Establishing this limit is crucial for the safety of both crew and passengers as well as cargo integrity during transport.