Boeing Resumes 777X Flight Tests After 5-Month Pause Due to Structural Issues

Boeing has resumed flight tests for its 777X commercial jets following a five-month hiatus caused by structural issues. The tests were initially paused in August 2024 after “severed thrust links” were discovered during a test flight from Hawaii to Everett, Washington. These links are critical components that connect the engines to the airframe.

Discovery of Structural Issue:

The defects were identified during scheduled maintenance, prompting Boeing to replace the faulty components. The company has now resumed flight tests after addressing the issue, marking progress towards the aircraft’s anticipated certification and delivery.

Key Features of the Boeing 777X:

The Boeing 777X is a highly anticipated twin-engine widebody aircraft designed to succeed the Boeing 777. It aims to enhance flight range and seating capacity, offering composite wings with folding tips to fit into current airport facilities. The aircraft is a major part of Boeing’s strategy to dominate the long-haul commercial aviation market.

Orders and Variants:

Boeing has secured over 500 firm orders for the 777X, which will be offered in three variants, including a freighter version. These orders solidify the 777X as a key player in the global aviation market.

Airworthiness Certification Plans:

The Boeing 777X is one of three Boeing aircraft expected to achieve airworthiness certification in 2025, along with the 737 MAX 7 and MAX 10, both of which have faced certification delays over the past two years.

Impact of Labor Strikes:

Boeing’s 777X program has also faced delays due to labor strikes, including a walkout by the International Association of Machinists in September and October 2024. The strikes have disrupted production and added to the challenges Boeing is already facing with its new aircraft.

Ongoing Testing and Setbacks:

Boeing is now resuming 777X flight tests after addressing the structural issue with the engine link. Despite these setbacks, the company is committed to moving forward with its testing phase. However, these delays have pushed the 777X’s first delivery to 2026, marking a significant postponement from the initial 2020 schedule.

Financial Impact:

Boeing’s financial performance has been impacted by these delays. In the fourth quarter of 2024, Boeing reported a significant loss of $5.46 per share, up from a loss of 4 cents the previous year. The company’s revenue dropped to $15.2 billion from $22 billion, primarily due to the machinist union strike and the delays caused by ongoing issues with the Boeing 737 MAX.

Boeing 777X Timeline:

The 777X was introduced more than a decade ago, with initial delivery set for 2020. Due to certification delays and flight testing setbacks, this was postponed to 2022, then to 2024 and 2025. After the August 2024 pause, Boeing rescheduled the delivery for 2026.

Airbus A350 Growth Amid Boeing Delays:

In contrast, Airbus has celebrated the 10th anniversary of its A350 aircraft, which continues to see strong demand. As of January 2025, Airbus has received 1,344 orders for the A350, with 642 delivered and 702 still in backlog. The A350’s popularity underscores its position as a key competitor to Boeing’s 777X, especially during Boeing’s ongoing delays.

This update highlights the ongoing challenges Boeing faces with the 777X, as well as the competitive landscape in the commercial aviation sector, where Airbus continues to gain ground.