Boeing said on Tuesday it would sell portions of its Digital Aviation Solutions business, including navigation unit Jeppesen, to private equity firm Thoma Bravo for $10.55 billion. The U.S. planemaker

The deal, with the private equity firm Thoma Bravo, will help the struggling aerospace manufacturer pay down debt and streamline its operations.

Boeing has reached $10.55 billion deal selling some its aviation technology, including a Denver business, to a software investment giant.