07:47 AM EST, 01/17/2025 (MT Newswires) -- Boeing ( BA ) resumed testing of its 777X widebody jet on Thursday, marking the first flight since the fleet was grounded in August due to an engine mounting structure failure, multiple media outlets reported Friday.

Reuters reported that the Federal Aviation Administration officials were not on board the flight of a 777-9 test plane that completed a round-trip flight from Boeing Field in Seattle to Moses Lake, Washington.

"We continue to execute a rigorous test program to demonstrate the safety, performance and reliability of the 777-9," Boeing ( BA ) said as quoted by Reuters.

Boeing ( BA ) reportedly has 481 orders for the 777X from major airlines, including 170 from Emirates and 60 from Qatar Airways.

Boeing ( BA ) did not immediately respond to requests for comment from MT Newswires.