What term is used to describe a passenger below 12 years old who is traveling without an adult?

The term "Unaccompanied Minor" specifically refers to a child who is typically under the age of 12 and is traveling alone, without an adult guardian or parent. Airlines have specific policies and procedures in place to ensure the safety and well-being of unaccompanied minors, which may include designated staff to oversee their boarding and transit. This designation is important in aviation for addressing the unique needs and safety considerations of children when they travel unaccompanied.

Other terms, although they might seem related, do not accurately capture this specific context. "Solo Traveler" and "Child Passenger" do not specifically denote a minor traveling alone, as they could refer to adults or children traveling with others. "Minor Traveler" is broader and can include any traveler under the age of 18, but it does not convey the specific situation of being unaccompanied. Thus, "Unaccompanied Minor" is the precise terminology used in aviation to describe a child traveling without an accompanying adult.