The arrangements will apply at all times to all regular passenger transport services, where the aircraft has seating capacity for 50 passengers and above.
The agreement will be reviewed after 12 months. Truss says aviation agencies will work with the industry and airline staff on further improvements, such as the requirements for medical testing, including mental health, of all flight crew members.
"Today's decision is a sensible, measured response that combines safeguarding the travelling public with the practical capabilities of the aviation sector," Truss said yesterday.
The Germanwings flight crashed last Tuesday, killing all 150 on board, including two Australians.
French officials say the plane's voice recorder indicates that co-pilot Andreas Lubitz, 27, locked the captain out of the cockpit of the jet and steered it into the Alps.
Australian pilots are subject to annual medical reviews, which include a psychiatric assessment.
If at any time there are concerns about the mental health of any pilot or co-pilot they are not placed in command of aircraft.
Meanwhile, reports in the German press suggest Andreas Lubitz was expecting a baby with his teacher girlfriend before the air crash.
Bild am Sonntag reported that Lubitz's unnamed partner had become pregnant by him in recent months.
The paper said that the woman had broken the news to her students within the past few weeks.
She is understood to have been travelling to the Alpine crash site in southern France when the news was broken that Lubitz was suspected of having caused the catastrophe.
Lubitz lived with his girlfriend in a flat in one of Dusseldorf's most prestigious suburbs. Their art deco-style flat is 20 minutes by road from the city's international airport and the Krefeld school where Lubitz's girlfriend is thought to have taught.
Der Spiegel has claimed that the two had made plans to marry, although authorities have yet to confirm this.
Lubitz's partner is thought to have taught English and maths at Krefeld's Gesamtschule Kaiserplatz, a state comprehensive with several hundred students.
Headteacher Jochen Adrian did not return calls for comment.
Forensic teams have isolated 78 distinct DNA strands from body parts recovered from the crash site in the French Alps, an investigator said.
Prosecutor Brice Robin said an access road was being built for all-terrain vehicles to reach the site.
Investigators have faced a huge task in trying to recover bodies and search for a second "black box" at the site, which is extremely hard to access. Between 400 and 600 body parts were currently being examined.
- AAP, AFP
