This is about investigating one particular widget which has been implicated in these crashes, had the source been available people would have been able to look

This is about investigating one particular widget which has been implicated in these crashes, had the source been available people would have been able to look at exactly how that system works over the last months, rather than speculating while they wait for the closed investigation to occur, and while they wait for the second accident to occur. This isn't a general 'bugs will be found', it's about being able to substantiate targeted suspicions about a particular part of the code.