After Ethiopia released preliminary findings from an ongoing investigation into the Ethiopian Airlines flight that crashed last month and after the first American wrongful death lawsuit against Boeing was filed, Boeing CEO Dennis Muilenburg stated that "It’s our responsibility to eliminate this risk. We own it. And we know how to do it." (See here.)
Democracy now, has a report including an interview with the plaintiffs in that first lawsuit, filed against Boeing and the Federal Aviation Administration here. The first part of the report are statements by family members expressing their emotional loss.
At the 22:46 mark, the attorney for the plaintiffs explains some of the evidence in support of their claims.