: This FAA document details the required design changes—including software updates to the MCAS and flight control computer—that were mandatory for the aircraft's return to the skies.

: An international team's assessment that found the MCAS system was not evaluated as a complete function during initial certification. Aircraft Accident Investigation Report B737- MAX 8, ET-AVJ

: This is a scathing 245-page document that concluded the crashes were the "horrific culmination" of faulty technical assumptions, a "culture of concealment" at Boeing, and insufficient oversight by the FAA.

If you are analyzing these documents, the following are the primary "proper" reports issued by governing bodies: