Airport advertising system

An airport airside advertising system for non-continuous display of advertising to passengers of commercial aircraft, the system comprising:

• an advertising billboard positioned on the airside of an airport having an airside and a landside and adjacent to a runway, taxiway or apron of the airport wherein the airside of the airport includes at least one runway and at least one taxiway and the landside of the airport includes a terminal building;
• the advertising billboard being mounted to face a direction substantially perpendicular to the direction of movement of an adjacent aircraft during landing, take off, taxiing or temporary parking thereof, the billboard being dimensioned to display advertising visible to passengers on an adjacent aircraft;
• the billboard being normally off and being turned on by receipt of an actuation signal;
• and
• one or more sensor elements positioned in proximity to the advertising billboard and configured to provide the actuation signal to the billboard in response to detection by one or more sensor elements of an adjacent aircraft within a predetermined range;
• whereby the billboard only displays the advertising in a direction substantially perpendicular to the direction of movement of a detected aircraft, and only displays the advertising to passengers when in an aircraft, disembarking passengers prior to their arrival at the terminal building and/or departing passengers following their departure from the terminal building.