Originally Posted by
Mike7777777
4000m is a long way down. In terms of design modifications to achieve retention and transmission of information, it's all fixable ... for a price. Wreckage location: simple buoy to be released following g measurement exceeding preset level (crash). Buoy contains GPS receiver/data logger and beacon, retrieve buoy and download data logger to locate release point. ELF receiver to trigger further buoy release (assuming USN ELF system is still in operation?), ELF signal to be sector specific (but I doubt if ELF can reach to 4000m). Buoys may contain flight data loggers, data to be stored on (several) SD cards or similar.
All adds weight/cost.
Mike,
Nearly all your suggestions mean new and currently non-existing equipment.
Wreckage location: simple buoy to be released following g measurement exceeding preset level (crash). Buoy contains GPS receiver/data logger and beacon, retrieve buoy and download data logger to locate release point.
Yes, this has been suggested and wouldn't cost
that much. Sticking a few more, and more sophisticated, ELBs (emergency location beacons) on the airframe.
But it's still as I said: "new and currently non-existing equipment", and the next aircraft going down will just happen to not yet have the equipment installed....
And no, ELF doesn't work that far down.
CJ