Not a very good update ! Reported by The Air Current, Boeing has halted flight tests of its B777X fleet after it discovered cracks in a primary Pylon structural component that mounts the largest General Electric GE9X Turbofan engines to the plane’s wings, during a post flight inspection. Worth noting, earlier this month a Boeing 777x (B777-9, N779XY) was at the Toluca International Airport(TLC), Mexico for the certification tests for high-altitude operations and engine performance. 🎥 Courtesy :

The second of four Boeing #777X test airplanes took to the skies for the first time yesterday. The jet will now start testing handling characteristics as part of our rigorous test program. | The Boeing Company