Lonewolf 50
Yes, it is the solution in search of problem on hand. A0283 explained it well.
Even after 14 days if SAR teams are not sure where it went down, how long it is going to take to recover FDR/CVR. There is near zero possibility of recovering human remains.
Arial search happens at 150+ knots, underwater search moves at 3 knots. DFIRS eliminates the FDR/CVR search part, gives exact coordinates where it went down, so SAR teams can work on recovery and aviation accident investigators can start their investigation immediately.
BDS P8-A (a B737 platform) sports DFIRS 2100, so why can't BCA B737/B787 or B777.
Not planning to discuss this technology on this thread, but want to share there are proven solutions for this problem.