Oops! The FAA conducted an audit of the Boeing 737MAX production process. 89 product audits were carried out; Boeing and Spirit Aerosystems (the subcontractor). Boeing passed 56, but failed 33 with 97 instances of alleged noncompliance. Spirit passed 6 audits but failed 7.
https://www.nytimes.com/2024/03/11/us/politics/faa-audit-boeing-737-max.html