Report: Boeing Insiders Called U.S. Civil Aviation Hotline to Report Issues With 737 Max Jets

The calls mainly involved now widely known issues with a piece of equipment called the angle of attack sensor.

from gizmodo http://www.gizmodo.co.uk/2019/04/report-boeing-insiders-called-u-s-civil-aviation-hotline-to-report-issues-with-737-max-jets/