Windmill/Wind Turbine Farms Description: - As of March 2013, standard obstruction symbols on sectional and TAC charts have been replaced with ICAO symbology that more accurately depicts wind turbines, as shown in this example - Altitude shown in the blue box is the msl altitude of the highest wind turbine in the group - UC means Under Construction or reported as position and elevation unverified - Caution: Guy wires may extend outward from these structures Question: Are windmills lighted at night? Answer: Some windmills are equipped with high-intensity lights that may operate part-time or by proximity activation. Always check current charts to determine whether windmills along your route of flight are equipped with lights. Requirements/Limitations: - Minimum Safe Altitudes per FAR 91.119 Ref. FAA Aeronautical Chart User's Guide © Air Safety Institute airsafetyinstitute.orghttp://www.airsafetyinstitute.org http://www.airsafetyinstitute.org