A report from French air investigators released Wednesday said that Germanwings co-pilot Andreas Lubitz practiced a descent on a flight prior to the one that crashed into the French Alps last March.
According to the BEA’s investigative report, on a March 24 flight from Germany to Spain, Lubitz continuously brought the aircraft down and back up again.
"Several altitude selections towards 100 ft were recorded during descent on the flight that preceded the accident flight, while the co-pilot was alone in the cockpit," the report read.
CNN noted that the agency’s report is based on the analysis from the plane's flight data recorder and cockpit voice recorder.
The report also found that Lubitz left the cockpit during that flight as well.
Prosecutors have said that on the return flight later that morning from Barcelona to Duesseldorf, Lubitz locked the pilot out of the cockpit and intentionally crashed into the French Alps. The crash killed all 150 people on board.
It was later revealed that he suffered from depression.
Lufthansa, the parent company of Germanwings, has not yet commented on the BEA’s report.
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