Boeing has put a halt to the certification tests underway for the 777X aircraft, and confirmed a report that inspectors have found cracks on a “thrust link” in place between the engines and wings to balance loads for the aircraft.
Two thrust links are installed between the wing and each of the aircraft’s two engines. According to Boeing, the problem was discovered following a test flight from Hawaii to Boeing’s complex in Everett, Wash., though reportedly the same issue has been identified on two comparable aircraft following test flights.
“During scheduled maintenance, we identified a component that did not perform as designed,” according to a Boeing. “Our team is replacing the part and capturing any learnings from the component and will resume flight testing when ready.”
The 777X test flights using four completed jets are underway in the expectation that the new aircraft will be launched next year and ready for service in 2026, an introduction date that has already been postponed several times.
The Boeing 777X is a twin-engine, widebody aircraft that updates the current 777 series to offer greater flight range and higher seating capacity, with a wider span for its composite wing structures and folding wing tips to ensure the jets can service current airport facilities. Boeing has promoted the 777X as “the world’s largest and most efficient twin-engine jet”.
Boeing has landed more than 500 firm orders for the 777X, which will be offered in two variants, as well as over 100 options for further deliveries.
