Can co-pilot deliberately end your life mid-flight? Question haunts passengers worldwide after German prosecutors revealed Germanwings co-pilot Andreas Lubitz, 27, received treatment for suicidal tendencies before intentionally crashing Flight 9525 into French Alps, killing all 150 people aboard.

Discovery exposes chilling vulnerability in aviation safety systems where mentally unfit pilot concealed medical condition, tore up sick notes, and locked captain out of cockpit before destroying aircraft.

Germanwings Flight 9525 disappeared from radar screens over French Alps on March 24, 2015, killing all 150 people aboard in what investigators later ruled a deliberate act by co-pilot Andreas Lubitz.

Plane was travelling from Barcelona, Spain to Duesseldorf, Germany when Lubitz locked the captain out of the cockpit and intentionally crashed the aircraft into mountainside. French and German investigators reached this conclusion after recovering black boxes from wreckage scattered across treacherous Alpine terrain.

Search teams rappelled from helicopters and scaled barren slopes to recover debris and human remains from crash site near Seyne-les-Alpes. Rescue workers faced extremely difficult conditions working among wreckage at high altitude.

Among victims were 16 German school children returning from exchange trip, whose bodies were transported home in convoy of hearses in June 2015. Families gathered at airports in Barcelona and Duesseldorf initially saw blank arrival boards before learning of tragedy.

Village of Le Vernet, close to crash site, now hosts memorial monument honouring the dead. Monument rises above meadow overlooking Alpine peaks where aircraft went down. Memorial ceremony will be held on Monday with moment of silence at 10:41am, exactly 10 years after impact.

German Chancellor Angela Merkel, French President Francois Hollande and Spanish Prime Minister Mariano Rajoy visited crash site day after tragedy to pay respects. Local communities welcomed grieving families and search teams during recovery operation that lasted several weeks.

Head and shoulders crop of a selfie posted to social media by Germanwings co-pilot Andreas Lubitz. AI Enhanced.

Germanwings co-pilot Andreas Lubitz received treatment for suicidal tendencies before deliberately crashing Flight 9525 into French Alps, German prosecutors revealed on Monday.

Discovery adds disturbing dimension to tragedy that killed 150 people, including two Australians, on March 24. Prosecutors found evidence of previous psychiatric treatment during searches of Lubitz's homes in Dusseldorf and Montabaur.

Investigation indicates 27-year-old pilot intentionally destroyed Airbus A320 while captain remained locked outside cockpit. Flight data recorder showed Lubitz manually set plane on descent path toward mountainside.

German authorities confirmed co-pilot had been declared unfit to work by doctors, but concealed medical condition from employer. Prosecutors said Lubitz tore up sick notes, including one covering day of crash.

Relatives of Australian victims Carol and Greig Friday visited crash site in remote Alpine region to pay respects. Couple from Victoria were travelling through Europe when tragedy struck.

French investigators continue recovering remains and wreckage from difficult mountain terrain. Recovery operation faces challenges due to steep slopes and scattered debris across wide area.

Germanwings parent company Lufthansa faces questions about pilot screening procedures. Aviation experts worldwide are examining how mentally unfit crew member passed regular medical checks required for commercial pilots.

German prosecutors stressed investigation remains ongoing. Authorities are analysing medical records and interviewing doctors who treated Lubitz to establish timeline of his psychiatric history and determine if warning signs were missed.

Source: Associated Press and ABC News.