![European airlines are under pressure to have clearer procedures for controlling access to cockpits. [Photo credit: Flickr: Creative Commons (BY-ND) by Digi-Mike]](https://www.ainonline.com/cdn-cgi/image/width=3840,format=webp,quality=95/https://backend.ainonline.com/sites/default/files/styles/fpsc_1200x630/public/uploads/2015/03/germanwings_a320.jpg?h=34bbd072&itok=1n9KU9Bi)
Tuesday’s crash of Germanwings Flight 9525 has raised questions about minimum cockpit occupancy requirements and the differences in flight deck access regulations between Europe and the U.S. Reacting to a French prosecutor’s determination that 27-year-old copilot Andreas Lubitz had deliberately crashed the Airbus A320 into the French Alps, the air transport industry has understandably seemed stunned and confused about how it came to pass that his captain had been locked out of the cockpit, powerless to intervene.
There has been confusion as to the extent to which European and U.S. regulations on cockpit access are in sync. According to the U.S. Federal Aviation Administration, airlines must develop FAA-approved procedures that include a requirement that, when one of the pilots exits the cockpit for any reason, another “qualified” crewmember must lock the door and remain on the flight deck until the pilot returns to his or her station. A qualified crewmember could be a flight attendant or a relief pilot serving as part of the crew. In essence, the rule requires that no fewer than two crewmembers occupy a cockpit at any time during the flight.