I wonder when the International Space Station will go upside down .. and fall on the Earth ?
The ISS is heavily affected by cosmic ray interactions, but as it has triplicated backups for everything this normally isn't a problem and the affected bit of kit just resets itself. The only problem noticable to the crew is when it happens to one of their laptop computers.
I assumed that aircraft would have similar protection in place to the ISS with regards to multiple backup flight control systems, but if they're engineered differently then cosmic rays could still pose a problem. Not particularly likely though, the odds of a cosmic ray hitting the wrong thing are spectacularly tiny