The Mainliners

About

The term Mainliner has multiple definitions across different contexts. It can refer to a person who takes drugs intravenously, or alternatively, a member of the Mainline Protestant tradition. Geographically, the term also describes someone who resides in the Mainline area of the Philadelphia suburbs. In aviation history, Mainliner was a generic designation for aircraft that operated along established Mainline flight routes. Additionally, Mainliner served as a specific prefix name for numerous aircraft operated by United Airlines and possibly other carriers, with individual aircraft often identified by city names such as Mainliner New York and Mainliner Washington. The widespread use of this term across medical, religious, geographic, and aviation fields demonstrates its varied applications throughout history.