What type of baggage is referred to as "unaccompanied"?

Unaccompanied baggage refers specifically to luggage that is not traveling with its owner. In this context, the best description involves the baggage of passengers who have already traveled on previous flights. This type of baggage is classified as unaccompanied since it is separated from the passenger who owns it, and it often requires special handling and processing at the airport.

Unaccompanied baggage can also occur in situations where passengers have checked their luggage on a flight but have left for another destination. This is important for ramp agents to understand, as it affects how such baggage is stored, tracked, and eventually reunited with its owner.

The other options describe different circumstances but do not align with the definition of unaccompanied baggage. For example, baggage of passengers currently on board is, by definition, accompanied, while excess baggage left behind tends to involve items that may not have been loaded onto a flight at all. Lost baggage not yet claimed refers specifically to luggage that has been misplaced but does not pertain to the concept of being unaccompanied. Thus, the correct understanding emphasizes the separation of the baggage from its owner at the time of travel.