Yes, in the EU the minimum recording time was recently increased to 25h.
It is not a tech limitation anymore.
What is actually limiting are privacy concerns from misuse of the longer recording.
What kind of privacy data would be on a black box recorder? Just banter between flight crew? They are in a work environment so the recorded conversations should be kept professional anyway, IMO.
Black box were Solid State Drive before SSD were common, the advantages of no moving parts are simply too high.
Then it should be easy to add in a larger capacity modern drive?
Yes, in the EU the minimum recording time was recently increased to 25h. It is not a tech limitation anymore. What is actually limiting are privacy concerns from misuse of the longer recording.
What kind of privacy data would be on a black box recorder? Just banter between flight crew? They are in a work environment so the recorded conversations should be kept professional anyway, IMO.