What is the maximum combined transportation indices of packages containing radioactive materials when transported in a passenger-carrying aircraft?

When transporting radioactive materials in a passenger-carrying aircraft, regulations set forth by the International Air Transport Association (IATA) and other aviation authorities stipulate specific limits on the combined transportation indices of such materials. The maximum combined transportation index for packages containing radioactive materials is 50 when transported on passenger aircraft.

This limit is put in place to ensure the safety of passengers and crew, as well as to comply with safety regulations regarding the potential exposure to radiation. The transportation index is a measure designed to represent the degree of radiation hazard associated with a particular package. A higher transportation index indicates a greater potential for exposure and therefore, stricter controls and limitations apply.

Thus, the choice of 50 correctly reflects the established regulatory framework aimed at balancing the need to transport necessary materials while ensuring the safety of the aircraft and its occupants.