[mytailorisrich]

"It was a dodgy flight plan" is a way to deflect, and not only that but it was "a dodgy French flight plan"... It's likely more accurate to say that potentially incorrect data in a flight plan triggered a dodgy response by the system.

[Nextgrid]

My bet is improper input validation or the French flight plan set some field that is specified but normally never used, so the code path handling it was never actually tested out in the real world?