Fire engulfed the 39-year-old aircraft when it hit a residential area northwest of Tehran. Under sanctions, Iran has struggled to maintain its aging air fleet.
Data from the recorder could provide further insight into the steps taken by the pilots before the plane crashed into the Java Sea in October.
Stranded passengers moved on safely the next day, but repairs for the plane have been delayed because of U.S. sanctions.
The consultancy’s report became key evidence in a battle over the extradition of a powerful Ukrainian oligarch charged in a scheme to help Boeing.
Patrick M. Shanahan, the White House pick for acting defense secretary, used his experience at Boeing to navigate, and battle, the Pentagon.
Their voyages are scheduled for next year, and they would be the first American astronauts to launch from American soil since 2011.