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Boeing Fixing New Software Bug on Max; Key Test Flight Nears

  • Company says latest flaw shouldn’t delay plane’s return
  • Issue involves aircraft’s so-called ‘trim’ warning system
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Boeing Co. has discovered a new software problem on the grounded 737 Max, but the company said the flaw won’t set back the goal of returning the plane to service in mid-2020.

The planemaker identified the issue during flight testing and notified the Federal Aviation Administration last month, according to an email Thursday from Boeing. The problem was that an indicator light, designed to warn of a malfunction by a system that helps raise and lower the plane’s nose, was turning on when it wasn’t supposed to, the company said.