Shell thingy,
It's time you were banned.
You think you're being clever and 'challenging' and you come up with some of the stuff tripped out by many of those who make a good living in 'safety', but then you let yourself down with a post like that above.
If you were the sort of person your online persona claims you to be, you would know that CVRs are very routinely overwritten after incidents, and that a longer duration would be of daily benefit to investigators.
Stop wasting our time here with your silly little meanderings please. You're spoiling the place for those of us who DO know what we're doing.