Flight records for the plane made by Brazil's Embraer that crashed last week in Kazakhstan are headed to the South American country so the data can be extracted, the Brazilian Air Force has said in a statement.
Data from the cockpit voice and flight data recorder will be processed in a laboratory run by Brazilian aeronautical investigators in the capital Brasilia, according to the statement.
It added that the process will be monitored by representatives from Kazakhstan, Russia and Azerbaijan.
The data will then be sent to investigators in Kazakhstan.
On Sunday, Azerbaijan paid tribute to the pilots and passengers of the Azerbaijan Airlines passenger plane.
The AZAL Embraer 190 jet crash-landed in Kazakhstan on 25 December, killing 38 of the 67 people on board.
The incident prompted several airlines to cancel flights to Russia, including Israel's El Al which announced yesterday it was suspending flights to Moscow until the end of March.
Azerbaijani President Ilham Aliyev has demanded that Russia accept responsibility for mistakenly firing on the plane as it tried to make a scheduled landing at Grozny airport in south Russia.
Russia has not confirmed that one of its air defence missiles hit the plane, but Russian President Vladimir Putin told Mr Aliyev in a phone call over the weekend that the systems were active at the time and that he was sorry the incident took place in Russian airspace.
Azerbaijan's prosecutor general reported that the head of Russia's Investigative Committee had told Azerbaijan: "Intensive measures are being carried out to identify the guilty people and bring them to criminal responsibility."
Russia has opened a criminal inquiry into the incident.
But it has not said whether it agrees that the plane was hit by one of its air defence missiles and has not itself said anything about finding or bringing any perpetrators to justice.
Mr Aliyev issued a rare forthright condemnation of Russia - a close partner of his country - on Sunday.
He said the plane was "hit by accident" but was angry that Russia had apparently tried to hide the cause of the crash.
Demanding that Mr Putin admit responsibility, Mr Aliyev also accused Russia of putting forward alternative theories that "clearly showed the Russian side wanted to cover up the issue".
Russia said Grozny, in the southern Russian region of Chechnya, was being attacked by Ukrainian drones when the AZAL airliner approached to make its landing through thick fog.
Survivors have described hearing explosions outside the plane, which then diverted more than 400km across the Caspian Sea towards the Kazakh city of Aktau, where it crash landed.
It was travellling from Azerbaijan's capital Baku to Grozny in Russia's southern Chechnya region.
Kazakhstan said it sent the plane's black boxes to Brazil to be analysed by the Aeronautical Accidents Investigation and Prevention Center, a unit of the Brazilian air force.
