SOURCE: News – Read entire story here.
From https://www.telegraph.co.uk/news/2019/03/12/us-mandate-design-changes-boeing-737-max-8-others-ground-plane/
from https://healthnews010.wordpress.com/2019/03/12/us-to-mandate-design-changes-on-boeing-737-max-8-as-others-ground-plane-after-crashes/
From https://heidifrost.blogspot.com/2019/03/us-to-mandate-design-changes-on-boeing.html