John (#953), I believe I understand all of that. However I would say it is "inexcusable" (and not just with the benefit of what we know now) to go ahead with the new technology without having put in place a programme of battery monitoring, data logging, and periodic data analysis.
The NTSB report, unless I missed something, does not answer some question re. what data may be available. Any useful data which might have been logged by the BCU, for example?
Also the following seems not a very precise statement:
"The BMU and suppressor had passed manufacturing quality tests and would have logged a failure if the suppressor had detached before the incident"
I would read it as "The only opportunity to detect the missing TVS would have been during the QA/QC bench test of the BMU". Is this correct?