Boeing Testing Dreamliner Cockpit Windows as Flaws Search Widens

  • Latest issue is limited to a smaller batch of 787 jets
  • Testing isn’t expected to affect March delivery restart
The cockpit of a Boeing Co. 787 Dreamliner.Photographer: Joshua Roberts/Bloomberg
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Boeing Co. is scrutinizing 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, according to people briefed on the matter.

Chicago-based Boeing has been testing the cockpit windows in a limited batch of aircraft after learning a supplier modified its production process, two of the people said, asking not to be identified because the matter is sensitive. Boeing wants to ensure the windows still meet its requirements after the change, but the testing isn’t expected to affect March deliveries, one of the people said.