Australian who lost wife and son sues over Germanwings tragedy By Rania Spooner Crash victims Greig and Carol Friday.
A Victorian man whose wife and son were among the 150 people killed when suicidal Germanwings co-pilot Andreas Lubitz crashed a jet into the French Alps, is suing a US flight school he alleges failed to stop the tragedy. 
Among explosive allegations made on behalf of David Friday are that the US training centre, owned by Germanwings parent company Lufthansa, negligently hid and failed to act on Lubitz's history of serious mental illness.
Lawyers for the Friday family argue US Federal Aviation Authority rules require flight instructors to stop teaching students "suffering from psychological abnormality" and that they knew or should have known Lubitz was unstable and a danger to passengers. The lawsuit was filed in the United States District Court in Arizona on Tuesday and states that had Lufthansa's Airline Training Centre Arizona exercised reasonable care it "could have prevented this predictable tragedy".
Mr Friday lost his wife Carol, 68, and 29-year-old son Greig when Lubitz locked the pilot out of the cockpit of an Airbus A320 and deliberately crashed the Dusseldorf-bound plane on   March 24, 2015.
Speaking to Fairfax Media, Mr Friday said the family's loss had been "devastating" and he was pursuing legal action against those he holds responsible in the hope it would prevent unnecessary deaths in the future.
"We feel legal action against the flight school, who were aware of the pilot's mental problems, will ensure that they never again allow a pilot with known dangerous mental problems to be licensed to pilot a passenger plane," he said.
Lubitz took 10 months leave from Lufthansa's flight school in Bremen, Germany, when he was suffering from a severe depressive episode, during which time he had signed "no-suicide pacts" with psychiatrists and was prescribed antidepressant medication, French investigators have revealed. However, he was cleared to resume training and passed his written exams in Germany in   October 2010.
His application was initially rejected by the Federal Aviation Authority, but Lubitz managed to go on to the next stage of his training at the Arizona campus where he spent four months, as is Lufthansa's practice for trainee pilots, before completing his training in   March 2011.