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.

Boeing has said it will sell Jeppesen, ForeFlight, and more to Thoma Bravo for $10.55B as it shifts focus to core aerospace and defense operations.

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