Even before the crashes of the Ethiopian Airlines Flight 302 and Indonesian Lion Air Flight 610, there were concerns that the USA Federal Aviation Administration (FAA) was delegating too much safety oversight to Boeing itself.
The FAA allowed Boeing to handle much of the safety certification process, and Congress supported doing so – though recent events may be prompting lawmakers to change their tune. Reports have suggested that Boeing even excluded FAA technical experts from some of those decisions.
In addition, recent analyses suggest that Boeing made several misjudgments when it designed MCAS, the automated correction system, and hasn’t been fully forthcoming with both the FAA and airlines about how it worked. The airline has also been accused of providing inadequate training for pilots.