Kelly Ortberg's first Paris Air Show as Boeing CEO was set to be relatively upbeat.

Under his leadership that began in August, the company has made strides in ramping up production of its bestselling 737 Max jets, increasing cash-generating deliveries of new planes, and indicating that it's turning a corner from a series of manufacturing and safety crises and years of lost ground to rival Airbus. Shares are up more than 13% this year, outpacing the S&P 500.