Comment by bparsons
There was a very large CME ten days ago. The NOAA scale had predicted a high likelihood of disruptions, and had specifically suggested that spacecraft and high altitude aircraft could be impacted.
https://www.swpc.noaa.gov/noaa-scales-explanation
https://kauai.ccmc.gsfc.nasa.gov/CMEscoreboard/prediction/de...
FWIW the "industry sources say" line on the incident is that it occurred on 30 October[1], so further back than ten days ago but of course there may have been other CME incidents at that time.
The European Agency Aviation Safety Agency [2] instruction describes the characteristics of the incident but not the date.
[1] https://www.theguardian.com/business/2025/nov/28/airbus-issu...
[2] https://ad.easa.europa.eu/ad/2025-0268-E