Boeing 737 Max 9 planes that have passed a new inspection process will be permitted to fly again, the Federal Aviation Authority (FAA) has announced.

Almost 200 aircraft were grounded in early January following a mid-air emergency on an Alaska Airlines flight.

On 5 January, a flight leaving Portland, Oregon had to make an emergency landing after part of the plane — known as a door plug or a fuselage plug — flew off, leaving a gaping hole in the side of the aircraft.