SPX FLASH TECHNOLOGY PROVIDES INSIGHT INTO INTERNATIONAL REGULATIONS FOR AVIATION OBSTRUCTION LIGHTING Aviation obstruction lights have been seen on tall structures since the 1930s with the start of nighttime flights. In the 1990s came cell phone towers, and more recently, wind turbines have become a common sight on the North American landscape. All of these […] The post Navigating North American Obstruction Lighting Standards appeared first on SPX Technologies in Charlotte, NC .