Boeing is still disappointing us, says CEO of Europe's biggest airline

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• Ryanair's Michael O'Leary criticized Boeing for ongoing delivery delays of 737 Max aircraft.
• Boeing slowed production rates in the wake of January's Alaska Airlines blowout.
• O'Leary also doubted certification timelines for Boeing's 737 Max 7 and Max 10.

The boss of Ryanair, Europe's biggest airline, is still unhappy with Boeing despite its new leadership.

In a recent interview with Reuters...