The CEO of Alaska Airlines said new, in-house inspections of the carrier's Boeing 737 Max 9 planes in the wake of a near-disaster earlier this month revealed that “many” of the aircraft were found to have loose bolts.I’m more than frustrated and disappointed,” he said. “I am angry. This happened to Alaska Airlines. It happened to our guests and happened to our people. And — my demand on Boeing is what are they going to do to improve their quality programs in-house.”https://www.nbcnews.com/business/bus...ays-rcna135316United Airlines CEO Scott Kirby said in a separate interview with CNBC on Wednesday that it is now contemplating a future for its fleet without the Boeing 737 Max 10, a newer version of the popular jet.