Originally Posted by
PersonFromPorlock
Isn't the obvious solution to the problem of recorder survival installing redundant recorders in different locations? The things can't be that expensive. What am I missing here?
You're missing the design, certification, rule-making and compliance-by factors, not to mention the retrofit costs. You're also missing the industry lobbying time against such rule-making due expenses inherent in the above. Any such case would require a very clear case for change and there isn't one here.
Even the case for deployable recorders hasn't been made sufficiently to alter regulatory requirements, nor has the case for full-time satellite transmission of all flight data.