WASHINGTON, July 18 (Reuters) - The U.S. Justice

Department said on Thursday the government has made "substantial

progress" toward reaching a final plea agreement with Boeing ( BA )

but does not expect to file the details before Wednesday.

The planemaker on July 7 agreed in principle to plead guilty

to a criminal fraud conspiracy charge and pay a fine of $243.6

million after the Justice Department said in May the planemaker

had breached a 2021 deferred prosecution agreement.