Wind Farms and Airspace

January 7, 2019

 To help the FAA achieve their objectives of promoting air safety and the efficient use of the navigable airspace, wind farm developers have aeronautical studies performed. Developers need to complete FAA Form 7460-1, Notice of Proposed Construction or Alteration. The information provided by the developer includes the location of the turbine (latitude and longitude), ground elevation at the turbine and total height of the turbine. This information is used to evaluate any potential impacts to the National Airspace System (NAS). 

 Filing Form 7460-1 will initiate a review of the airspace in the vicinity of the wind farm by the FAA who will

 After the review is complete, the FAA will issue a letter letting the developer know what the impacts are to the NAS, which turbines in the project will need to have obstruction lighting installed on them, as well as next steps and if additional information is needed. 

If a turbine location is moved or its height changed during the development or design, it may require that a new Form 7460-1 be filed reflecting the change. 

 When the wind farm is in the construction phase, a Form 7460-2 may be required to notify the FAA that the turbine is being constructed to its full height. 

Locations of the new wind turbines then show up on various obstruction charts and air navigation maps to help pilots. 

If you would like more information, or have any questions, please feel free to contact us. 

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Lisa Oliver


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