Additionally, Lubitz was locked in by himself because he had bypassed emergency access codes, which provide flight crew access to the cockpit.
There are cries of ‘unlock the damn door’ and efforts to smash the door down as the captain becomes more and more frantic.
Passengers are heard yelling in the last seconds of the video, just before Flight 9525 crashes into the hillside.
Following the incident, it was discovered that Lubitz’s doctor had deemed him unsuitable to fly due to his acute melancholy and suicidal thoughts. But he had kept this knowledge from his boss.
After the disaster, the pilot made a terrifying comment to a German newspaper, which Lubitz’s ex-girlfriend would later recall:
“One day I will do something that will change the whole system, and then all will know my name and remember it.” She continued: “I never knew what he meant, but now it makes sense.”