PANGKALAN BUN, Indonesia (AP) -- Divers retrieved one black box Monday and located the other from the AirAsia plane that crashed more than two weeks ago, a key development that should help investigators unravel what caused the aircraft to plummet into the Java Sea.

Indonesian air force personnel carry Flight data recorder of the ill-fated AirAsia Flight 8501 that crashed in the Java Sea, at airport in Pangkalan Bun, Indonesia
Indonesian air force personnel carry Flight data recorder of the ill-fated AirAsia Flight 8501 that crashed in the Java Sea, at airport in Pangkalan Bun, Indonesia (AP Photo/Achmad Ibrahim)
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The cockpit voice recorder was found hours after officials announced that the flight data recorder had been pulled from beneath a piece of the aircraft's wing and brought to the sea's surface, said Suryadi Bambang Supriyadi, operation coordinator for Indonesia's national search and rescue agency.

He said the voice recorder was about 20 meters (66 feet) away from the data recorder but remained lodged beneath heavy wreckage, and divers were struggling to free it at a depth of 32 meters (105 feet).

Searchers began zeroing in on the location a day earlier after three Indonesian ships picked up intense pings from the area, but they were unable to see the devices due to strong currents and poor visibility.

The two instruments, which emit signals from their beacons, are vital to understanding what brought Flight 8501 down on Dec. 28, killing all 162 people on board. They should provide essential information about the plane and all of the conversations between the captain and co-pilot for the duration of the flight.

"There's like 200-plus parameters they record," said aviation safety expert John Goglia, a former U.S. National Transportation Safety Board member. "It's going to provide us an ocean of material."

The flight data recorder will be taken to Jakarta, Indonesia's capital, for evaluation, and the other black box will be sent as soon as it is retrieved. It could take up to two weeks to download and analyze their information, said Nurcahyo Utomo, an investigator at the National Committee for Safety Transportation.

The slow-moving hunt, which has often gone days with little progress, was boosted over the weekend when the Airbus A320's tail was lifted from the seabed. It was the first major wreckage excavated from the crash site, but the black boxes were not found inside as hoped.

Parts of AirAsia Flight 8501 is seen on the deck of rescue ship Crest Onyx at Kumai port in Pangkalan Bun, Indonesia
Parts of AirAsia Flight 8501 is seen on the deck of rescue ship Crest Onyx at Kumai port in Pangkalan Bun, Indonesia (AP Photo/Achmad Ibrahim)
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Search efforts have been consistently hampered by big waves and powerful currents created by the region's rainy season. Silt and sand, along with river runoff, have created blinding conditions for divers.

Henry Bambang Soelistyo, head of the national search and rescue agency, said Sunday that divers had located a wing and debris from an engine. Officials have been working urgently to locate the main section of the plane's cabin, where many of the victims' corpses are believed to be entombed.

So far, only 48 bodies have been recovered. Decomposition has made identification more difficult in recent days.

The last contact the pilots had with air traffic control, less than halfway into their two-hour journey from Indonesia's second-largest city, Surabaya, to Singapore, indicated they were entering stormy weather. They asked to climb from 32,000 feet (9,753 meters) to 38,000 feet (11,582 meters) to avoid threatening clouds, but were denied permission because of heavy air traffic. Four minutes later, the plane dropped off the radar. No distress signal was sent.


Associated Press writer Niniek Karmini in Jakarta, Indonesia, and reporter Nicki Mayo in Washington contributed to this report.

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