Beijing authorities have conducted preliminary analyses of the crash that left 132 passengers dead.
While no cause has yet been determined for the crash, online tracking data showed the jet rapidly dropped from an altitude of about 8,900 to 2,400 metres in just over a minute.
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.
Chinese recovery teams combed the debris of a crashed China Eastern jet with hopes fading of finding any survivors from the 132 people aboard.
Foreign Minister Vadym Prystaiko says Kiev has received "full cooperation" from Iran which has allowed its 50 experts access to black box flight recorders of the crashed Ukrainian plane.
Iran rules out a missile strike as the cause of a Ukrainian passenger plane crash, saying such a scenario made "no sense," as US media citing officials report the plane was mistakenly downed by Iran during confrontation with US.
A Boeing 737-800 plane that crashed outside Tehran was carrying 82 Iranian, 63 Canadian nationals and 11 Ukrainians, a Ukrainian minister said.
Biman Bangladesh Airlines flight to Dubai makes emergency landing at Chittagong after a passenger behaves suspiciously and appears to be wanting to hijack the plane, airline officials say.
Search and rescue services are reported to have found body parts following the crash of flight JT 610 shortly after take off from Indonesia's capital, Jakarta. An Indonesian rescue official says they're not expecting to find any survivors.
The Air Niugini Boeing 737-800 was attempting to land at Weno airport in Micronesia but ended up half submerged in Chuuk lagoon after the accident on Friday morning.
The Air Niugini plane hit the water short of the runway while trying to land at Chuuk Island in the Federated States of Micronesia, according to the airline.
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