The BEA has formed an international working group to explore all kinds of ideas which would ensure better recovery of recorders and/or data during and after accident events. Most of what has been suggested here is being discussed.
Following the AF447 occurrence as well as other difficult sea recovery operations, the BEA decided to create an international working group called “Flight Data Recovery” in order to look into new technology to safeguard flight data and/or to facilitate the localization and recovery of on-board recorders. Areas such as flight data transmission via satellite as well as new flight recorder or ULB technology have been considered. It was also important to assess the cost and benefits of the possible solutions compared with existing systems. This working group met twice to perform this task.
There´s quite a lot more to read here in this technical report dated Dec 22:
http://www.bea.aero/en/enquetes/flig...nal.report.pdf