Which of the following structures is NOT required at Basic Utility airports?

At Basic Utility airports, the primary focus is on providing essential services and safe operations, keeping in mind constraints related to size, traffic, and funding. Among the choices presented, an administration building is not considered a mandatory structure for Basic Utility airports. These airports prioritize functionality and safety over administrative convenience.

While hangars, runway lights, and repair facilities are crucial for the operation and maintenance of aircraft and ensure safe flight operations, the absence of an administration building does not hinder the fundamental services that a Basic Utility airport is designed to provide. Airlines and flight operations can still function efficiently without a dedicated administrative building, as activities can often be managed in a more flexible and less structured manner in smaller airport settings.