These are airline definitions and schedules, each one in ZIP format. To install them into FSCaptain, extract the contents of the archive into your FSCaptain/Airlines folder. Then, in the Administrator, go to the Airline Definitions tab and click on "Create New Airline". When it asks, click on "yes" to the question, "would you like to base the new airline on an existing airline?"

When the file select dialog comes up, click on the configuration file of the new airline you just extracted. Type the same name as the new airline into the airline filename box (where it says "(newname)" and press OK. The airline is now a part of your FScaptain installation and you can fly for them. If a schedule was included in the downoad you can access it from the "Schedule" button.

Piedmont Airlines 1958