Boeing fails safety tests on 737 Max. FAA found "violations in the control of manufacturing processes, the handling and storage of parts, and product inspection at Boeing" Boeing said it was continuing to make immediate changes based on the FAA audit.

A plan to improve safety and quality is being developed, the aircraft manufacturer said in response to a request from the Reuters news agency. The Federal Aviation Administration (FAA) and Spirit AeroSystems have not yet responded to inquiries, according to Reuters.