For the issue not being able to read out a CVR or FDR, it's the same for not being able to find the location of a missing plane. This is 2017. We can track objects years out in space but we can't do that.
It's just the ignorance of the airline industry (Airliners IATA FAA with the unions all over the world and the same for the NTSB and all the colleges on this earth to change this quick.
Technology is there and should be used or better, should be mandatory on every commercial plane and also twin GA.
Like I said, this is 2017!
For the incident itself, just unbelievable this could happen at SFO and with AC!