A system comprising - a transparency for an aircraft, comprising a plurality of preconditioned glass and/or plastic sheets (22, 24, 26, 28, 30, 34, 60) laminated together, wherein first outer surface of the laminated sheets is first major surface of the transparency and opposite second major surface of the laminated sheets is second outer surface of the transparency, and the first major surface of the transparency is designated as outside surface of the transparency, to provide a transparency having a property selected from the group of a chemical property, a physical property, an electrical property and combinations thereof; - a combination of sensors selected from the group of a sensor for detecting moisture; a sensor for detecting impacts to, or vibration of, the transparency; a sensor for detecting a fracture in one or more of the sheets; a sensor for detecting electric arcing and a sensor for detecting temperature changes of an electrically conductive member, wherein the sensors are mounted on a surface of one of the sheets between the first and second major surfaces of the transparency, the combination of sensors mounting the transparency to monitor performance of at least one of the properties and to generate a signal representative of the performance of the at least one of the properties, wherein the combination of sensors comprises a sensor for detecting moisture and comprises a layer of a moisture sensitive material electrically connected to a first electrode (260A-260D) and to a spaced second electrode (262A-262D), and the first and second electrodes are electrically connected to a connector (300, 302), and - one part of the electrical connector external of the transparency and connected to the sensors, to provide external access to the signal generated by the sensors. - a transparency for an aircraft, comprising a plurality of preconditioned glass and/or plastic sheets (22, 24, 26, 28, 30, 34, 60) laminated together, wherein first outer surface of the laminated sheets is first major surface of the transparency and opposite second major surface of the laminated sheets is second outer surface of the transparency, and the first major surface of the transparency is designated as outside surface of the transparency, to provide a transparency having a property selected from the group of a chemical property, a physical property, an electrical property and combinations thereof; - a combination of sensors selected from the group of a sensor for detecting moisture; a sensor for detecting impacts to, or vibration of, the transparency; a sensor for detecting a fracture in one or more of the sheets; a sensor for detecting electric arcing and a sensor for detecting temperature changes of an electrically conductive member, wherein the sensors are mounted on a surface of one of the sheets between the first and second major surfaces of the transparency, the combination of sensors mounting the transparency to monitor performance of at least one of the properties and to generate a signal representative of the performance of the at least one of the properties, wherein the combination of sensors comprises a sensor for detecting moisture and comprises a layer of a moisture sensitive material electrically connected to a first electrode (260A-260D) and to a spaced second electrode (262A-262D), and the first and second electrodes are electrically connected to a connector (300, 302), and - one part of the electrical connector external of the transparency and connected to the sensors, to provide external access to the signal generated by the sensors.