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Related: Some wind turbines apparently only turn on their position lights when there's any aviation traffic nearby (as detected by either local transponder inte

by lxgr 1y ago

Related: Some wind turbines apparently only turn on their position lights when there's any aviation traffic nearby (as detected by either local transponder interrogators (possibly ADS-B receivers?) or radar)!

scblock 1y ago
Radar, called Aircraft Detection Lighting Systems (ADLS). The requirements are summarized in the FAA Advisory Circular covering aviation marking and lighting.
- lxgr 1y ago
  As far as I understand, non-US systems don’t always use (primary) radar.