5.426 in the Radio Frequency Table Allocation of Ireland.

Content Type
ITU FOOTNOTE
Title
5.426
Description
The use of the band 2 900-3 100 MHz by the aeronautical radionavigation service is limited to ground based radars.
Source
https://search.itu.int/history/HistoryDigitalCollectionDocLibrary/1.43.48.en.101.pdf