The Federal Aviation Administration (FAA), the U.S. airline regulator has ordered the grounding of some Boeing 737 Max 9 jets. This comes after a portion of the plane blew out during an Alaska Airlines flight. The FAA said the inspections would affect 171 planes. An Alaska Airlines Boeing 737-9 MAX faced an emergency landing after one of its doors blew open mid-air, minutes after take-off on Friday night.