A police source said pulverised fragments of the Airbus A320 were being stored in a hangar near the crash site and clean-up operations were now set to start, nearly a month after the crash.
The Germanwings Airbus 320 was flying from Barcelona to Duesseldorf when it crashed in the French Alps on March 24, killing everyone aboard, including 72 Germans and 50 Spaniards.
Co-pilot Andreas Lubitz, who had been diagnosed as suicidal in the past, is believed to have deliberately crashed the plane after locking the pilot out of the cockpit.
The aviation disaster highlighted the question of pilots' mental health and saw industry doctors urge more extensive medical checks for those tasked with flying aircraft.
Ripped up sick notes were found in a flat used by Lubitz, which authorities believe indicates that the 27-year-old was trying to hide his illness from his employer.