In 2015, on March 24, Germanwings Flight 9525 (an Airbus A320-200) crashed northwest of Nice, in the French Alps, after a constant descent that began one minute after the last routine contact with air traffic control and shortly after the aircraft had reached its assigned cruise altitude. All 144 passengers and six crew members were killed. The crash was intentionally caused by the co-pilot, Andreas Lubitz. Having been declared "unfit to work" without telling his employer, Lubitz reported for duty, and during the flight locked the Captain out of the flightdeck. In response to the incident and the circumstances of Lubitz's involvement, aviation authorities in Canada, New Zealand, Germany and Australia implemented new regulations that require two authorized personnel to be present in the cockpit at all times. Three days after the incident the European Aviation Safety Agency issued a temporary recommendation for airlines to ensure that at least two crew members, including at least one pilot, are in the cockpit at all times of the flight. Several airlines announced they had already adopted similar policies voluntarily.
