Today's Irish Times reports that the IAA has completed its investigation of the FR landings in "below limits" visibility at STN last April.
Of the fifteen aircraft involved, four landed in visibility of less than 500m (RVR) and should have diverted; another eleven had visibility of 550m and were okay to land. The IAA said that due to lighting being less than it would normally have been (no TDZ or centreline lights available), the visibility standards were higher. FR's Ray Conway said that the NOTAM on the issue was misleading as it didn't say that the RVR was affected.
The IAA said that since this was a technical breach rather than a critical safety issue, no further action was being taken. The IAA was satisfied that the airline had taken the necessary steps to address the issue, including extra training for the crews involved.