WWW asks:
Has anybody found a valid conceptual flaw in the concept?
A very basic bandwidth problem:
From post 1728
aircraft broadcasts the DFDR/CVR data on VHF/FM
1: VHF/FM channels are sized to carry one voice channel with some accepted loss of quality. Not sure how 3 or 4 CVR channels plus the DFDR data will fit in that same bandwidth. Note that the CVR often takes extensive processing to extract the transcript, further degrading the audio quality by compressing to fit in the proposed BW would make it unusable in at least some cases.
2: "BROADCASTS", what happens when there are multiple planes within range of each other, coordinating the channels used for this broadcast without interfering with normal use would be challenging at best.