What is a contractor in the context of the Chicago Department of Aviation?

In the context of the Chicago Department of Aviation, a contractor refers to a business that is engaged in performing work under a contract for the City. This means that the contractor enters into a formal agreement with the City to provide specific services or complete particular projects, typically following a bidding process. Contractors are essential for the Department of Aviation as they bring specialized skills, equipment, and resources that may not be available within city government operations. They help in maintaining and operating the airport effectively, ensuring that various functions like maintenance, construction, or management services are carried out proficiently. Understanding this role clarifies the operational structure within the Chicago Department of Aviation, where contractors contribute significantly to the overall functioning of airport services.