The FAA declined to remark outside of the department’s response hooked up to the report. The IG did not immediately reply to Reuters for a request for remark.

A Boeing spokesman said the enterprise experienced taken actions to enhance safety and was dedicated to transparency. “When the Max returns to service, it will be just one of the most carefully scrutinised aircraft in history, and we have whole self confidence in its safety,” he said.

The IG’s report is the hottest of stories faulting the plane’s approval, although the Justice Division is pursuing a criminal investigation.

The report facts activities from the early phase of the certification approach in January 2012 till the second crash and facts allegations of “undue force” from Boeing administration on employees managing safety certification.

The report pointed out that immediately after the Indonesia crash the FAA concluded a threat evaluation that discovered that the uncorrected