Absent the "psycho" pejorative, 447 did indeed experience a "single event effect". Which one? A rather pedestrian failure of a system touted to be "triple redundant", it was no such thing. Redundancy implies separate (back up) system, or at least, alternate source, not "common failure of three identical sensors....collecting periodically and equally discordant data....resulting in erroneous and NCD output."
Producing a disruption in auto flight, a decay in flight law, and uninterrupted full travel of auto trim to full up pitch.