[araes]

CGMthrowaway has an interesting comment on the other thread about this subject, that it's likely not solar radiation. "failing solid state relay or contactor on the shared avionics power bus" [1] Related to the previous 2008 incident on Qantas 72 that had similar characteristics.

[1] https://news.ycombinator.com/item?id=46083560

  > On the Qantas 72 flight (2008), the ATSB report showed the same power spike that upset the ADIRU also left tidy 1-word corruptions in the flight data recorder. Those aligned with the clock cycle, shared the same amplitude and were confined to single ARINC words. That is pretty much exactly the signature of a failing solid state relay or contactor on the shared avionics power bus (upstream of both FDR and fly by wire).

  > Radation-driven bit flips would be Poisson distributed in time and energy. So that is one way to find out