Boeing warns 737 MAX production ramp-up slower, 777X tests slip to 2027, stock drops over 5%

SentiSense · Published Sep 16, 2026, 4:02 PM ET · Updated Sep 17, 2026, 7:59 AM ET

Boeing CEO Kelly Ortberg said the company is "not stable yet at 47 a month" on 737 MAX output, blaming a wing-assembly constraint at Renton, and the s...