Originally Posted by
parkfell
If as appears the case the CVR was overwritten, does software exist
to ‘dig deep’ & recover more than the last current 2 hours ?
CVR will have been over-written but the ATC tapes will still be available. That will at least go some way to determine if a clearance was issued, or if a confusing RT conversation led to an unchallenged error.
As real bonus, we still have all flight deck occupants around to tell their side of the incident.