Hacker Chris Roberts Allegedly Said He Hacked Airplane's Entertainment System
businessinsider.com
businessinsider.com
I read this exact line from an earlier article stating that this was in a simulation only and that he had accessed the in-flight entertainment network as a proof of concept, but did not actually do anything while on the flight.
This is just garbage reporting.
I really think it strains credulity for him to claim he overwrote code when at minimum I'd assume code changes are locked out while the plane is in flight.