As has been noted in several of the comments, the crashes were a result of a faulty design, not aircraft failing to meet the design.
The self-certification here wasn’t part of the chain of events that led to the crashes; it appears to have been related to other issues the FAA uncovered as a side effect of their investigation.
The self-certification here wasn’t part of the chain of events that led to the crashes; it appears to have been related to other issues the FAA uncovered as a side effect of their investigation.