Kazakhstan has sent the black boxes of the AZAL aircraft to Brazil for investigation.

On December 30, the Ministry of Transport of Kazakhstan reported that the commission investigating the aviation incident has already departed for Brazil.

Brazil is the manufacturing country of the Embraer aircraft that crashed near Aktau. "CENIPA has the necessary technical capabilities, equipped with appropriate equipment and a certified laboratory for reading them," the Ministry of Transport stated. It also mentioned that, according to the Chicago Convention, the state conducting the investigation of an aviation incident decides on the choice of the country for reading and decoding the black boxes. It emphasizes that the decision was made after "consultations with the aviation authorities of Azerbaijan and Russia."

All three states are participants in the Interstate Aviation Committee, which, as stated on the organization's website, "investigates all aviation incidents involving aircraft of the states that are parties to the agreement, both within their territories and beyond." However, Azerbaijan refused to allow the investigation of the AZAL aircraft disaster to be conducted under the auspices of the IAC. According to the words of the President of Azerbaijan, "this institution mainly consists of Russian officials, and it is headed by Russian citizens," therefore "the factors of objectivity may not be fully satisfied."

On the eve, Aliyev stated that the aircraft that crashed in Kazakhstan sustained damage "as a result of ground fire" while over Russian territory. According to Ilham Aliyev, on December 27, Azerbaijan submitted three demands to the Russian side regarding the aviation disaster: to apologize, to acknowledge guilt, and to punish those responsible and compensate the Azerbaijani state and all victims.

• The Embraer aircraft of the AZAL airline crashed near the city of Aktau in Kazakhstan on December 25. The plane was on a flight from Baku to Grozny but deviated from its course after, according to the main version, coming under fire from Russian air defense. There were 67 people on board, including five crew members. 38 people died, and 29 survived. The majority of those on board, 42 people, were citizens of Azerbaijan, 16 were citizens of Russia, 6 were from Kazakhstan, and 3 from Kyrgyzstan.
• Initially, Rosaviatsia suggested the version of the aircraft colliding with a flock of birds, leading to an emergency situation on board. However, on the day of the tragedy, recordings of the aircraft's damage surfaced online, showing traces resembling those caused by impact elements on the tail section.
• Subsequently, several media outlets, including Euronews and Reuters, citing sources in the Azerbaijani government, reported that the aircraft may have been damaged by a Russian air defense missile from the "Pantsir" system near Grozny. According to Aliyev, the aircraft was shot down "accidentally," not intentionally.
• After the crash, "Azerbaijan Airlines" reduced the number of flights to Russia. Several other companies, including Israeli El Al and FlyDubai, also announced the suspension of flights to Russian cities.
• As of December 30, the Russian authorities have not officially taken responsibility for the disaster. However, Russian President Vladimir Putin, in a phone conversation with Aliyev, apologized for the incident occurring in the sky over Russia, and representatives of the aviation authorities acknowledged that air defense systems were operational in Grozny on December 25, reportedly repelling an attack by Ukrainian drones.