Full Coverage: The crash of Germanwings Flight 9525

The captain of a doomed Germanwings flight yelled, “Open the damn door!”

Additional evidence emerged Saturday to suggest copilot Andreas Lubitz had health issues that should have prevented him from being allowed anywhere near the controls of the Germanwings A320 Airbus that he apparently deliberately flew into a mountain in the southern Alps on Tuesday, killing all 150 people aboard.

The troubled mental condition of German pilot Andreas Lubitz came under sharp examination Friday, as German investigators revealed that he had hidden an illness from his employer and torn up a note from his doctor indicating he was unfit to work on the day he apparently crashed a plane with 150 people aboard in the French Alps.

The silence in the cockpit during the last eight minutes of doomed Germanwings Flight 9525 was broken only by the copilot’s even breathing.

One of the subtler ironies of the Germanwings accident — though the word “accident” may no longer be appropriate — is that the airplane involved used so-called fly-by-wire technology.

The apparently deliberate act of a German pilot that caused the deaths of 150 people in France is leading to a broad reexamination of international airline security rules, which allowed the pilot to lock his more senior crew member out of the cockpit.

The mystery surrounding this week’s crash of a German airliner into the French Alps deepened Wednesday with a report suggesting the pilot may have been locked out of the cockpit before the crash.

French air accident investigators said Wednesday that they had extracted an audio file from the cockpit voice recorder of the Germanwings Airbus that crashed in the Alps with 150 people aboard.

The troubling narrative emerging from the Germanwings crash in the French Alps -- that the co-pilot deliberately plowed the plane into a mountain after locking the captain out of the flight deck -- has some similarities to the 1987 crash of a jetliner in Central California.