Germanwings Flight 9525 was a scheduled international passenger flight from Barcelona–El Prat Airport in Spain to Düsseldorf Airport in Germany. On 2015, the aircraft, an Airbus A320-211, crashed 100 km north-west of Nice in the French Alps. All 144 passengers and six crew members were killed. The crash was caused deliberately by the co-pilot, Andreas Lubitz, who had previously been treated for suicidal tendencies and declared "unfit to work" by a doctor.