PPRuNe Forums - View Single Post - China Eastern 737-800 MU5735 accident March 2022
Old 30th Apr 2022, 12:01
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Originally Posted by CBD3000
If I, as slf, can us the free wifi on QANTAS flights to send text and much larger image files then why is it difficult to send CVR and FDR info back to base?
I think there are two major reasons. First, there simply isn't enough bandwidth available using 'traditional' systems such as VHF datalink and SATCOM. CVRs and FDRs generate a huge volume of data and when you multiply that by the large number of aircraft that might be airborne in the same area at the same time, the available bandwidth isn't sufficient to reliably support data streaming. Second, is cost. Data streaming is expensive and nobody's been able to justify the extra cost on safety grounds. That said, technology is constantly changing and there will no doubt come a time when streaming of CVR and FDR becomes feasible. Mind you, international regulatory change normally take years so it will no doubt be a long time before data streaming becomes the 'norm'.
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