A passenger who is between more than 16 days but less than 2 years old is classified as what?

The classification of a passenger who is more than 16 days old but less than 2 years old is appropriately labeled as an "Infant" (INF). This age range is established in the aviation industry to differentiate between varying passenger categories. Infants are typically those who are too young to occupy their own seat and are often required to sit on an adult’s lap during the flight.

Understanding this classification is critical for airlines in terms of safety regulations, seating arrangements, and fare structures. Airlines adhere to this classification to ensure that the necessary safety measures and provisions are in place for very young passengers, which includes extra care in terms of seating and support during travel.