Welcome to the Visual Aids Services website. This site is devoted to airport visual aids that are utilized on airports for the purpose of providing, in all weather conditions, visual signals to the pilot that provide an awareness of where the aircraft is on the airport surface. Most visual aids are lighted and must meet a certain light output requirement.  Proper design, installation and maintenance of lighted visual aids are essential to ensure that the signal to the pilot meets the minimum visual signal requirement. This website will provide help and information pertaining to all phases of airport lighted visual aids.