Boeing Co. agreed to sell its flight navigation unit and other digital assets to Thoma Bravo for $10.6 billion in cash, the first major portfolio transaction under Chief Executive Officer Kelly Ortberg as he seeks to shore up the planemaker’s finances.

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.