Military denies reports the aircraft had been carrying radioactive material when it came down near Glamis, just 35 km from the Mexican border.
Authorities said the black box found the previous day was the cockpit voice recorder, which contains the communications between the pilots, as search for the other recorder continued.
One of the two "black box" recorders from the crashed China Eastern airliner was recovered as investigators try to piece together what made a jet carrying 132 passengers nosedive in southern China.
China Eastern Airlines Boeing jet has crashed in the southwest province of Guangxi, with a number of casualties still unknown.
The L-410 plane carrying 23 people crashed during a flight over the region of Tatarstan, killing 16 people and injuring seven others, Russian emergency services say.
Uzbek Defence Ministry says an Afghan military jet was shot down by its air defence forces and crashed after crossing the border into Uzbekistan.
All seven personnel on board died after the plane crashed due to engine failure near Abuja airport, air force spokesman Ibikunle Daramole said.
Indonesian divers find the casing of a cockpit voice recorder from a Sriwijaya Air plane that crashed into the Java Sea last week, but are still searching for its memory unit.
At least five other victims have been identified, as forensic examiners sort through mangled human remains retrieved from the wreckage-littered seabed in the hope of matching DNA with relatives. The search was earlier suspended over bad weather,
Officials say more human remains were also found at the crash site, as well as personal belongings, such as wallets containing identification cards, three days after a jet crashed into the Java Sea with 62 people on board.
The settlement includes a criminal monetary penalty of $243.6 million, compensation of $1.77 billion, and the establishment of a $500 million crash-victim beneficiaries fund to compensate the legal beneficiaries of the passengers.
Describing Tehran's handling of the situation as "unacceptable," Kiev says the amount of compensation for 176 families and survivors should be negotiated.
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