All of them. As shown by the overall statistics. And no, I haven't forgotten the MAX crashes. But the issue was addressed. And I hope all 737 pilots have checke

All of them. As shown by the overall statistics. And no, I haven't forgotten the MAX crashes. But the issue was addressed. And I hope all 737 pilots have checked the corresponding cutoff switches. But that is exactly the point: a new plane would mean a new learning phase how to operate it safely. It can and should be done, but it isn't a silver bullet, especially none which would arrive withing the next 10 years.