Government documents obtained by The Irish Times detail one incident where a signal traced to Russia blocked a high-frequency radio channel. The channel is used by Irish air-traffic controllers to communicate with commercial aircraft over the Atlantic in emergency situations. In response the Irish Aviation Authority (IAA) radio operations based in Co Clare were forced to open a new communications channel and take “mitigation measures”. An email detailing the September 2022 incident was sent by a department official to members of the National Civil Aviation Security Committee​​. They pose little danger on their own but demonstrate an ability to interfere with aircraft communications at will.

Source: The Irish Times November 22, 2025 09:25 UTC