Boeing tests Dreamliner cockpit windows as flaws search widens

The emergence of yet another potential glitch comes as Boeing’s mechanics and engineers work furiously to try to restart 787 Dreamliner deliveries by the end of this month

A China Southern Airways Boeing Dreamliner 787 plane lands at Heathrow Airport in West London.

Boeing is scrutinising the flight-deck windows of some of its 787 Dreamliners as the beleaguered planemaker expands its search for potential manufacturing flaws that have delayed deliveries of its marquee jetliner.

Chicago-based Boeing has been testing the cockpit windows in a limited batch of aircraft after learning a supplier modified its production process, according to sources. Boeing wants to ensure the windows still meet its requirements after the change, but the testing isn’t expected to affect March deliveries.