Author Topic: Report: Chinese ship hears pulse signal in south Indian Ocean  (Read 219 times)

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Report: Chinese ship hears pulse signal in south Indian Ocean
By Tom Watkins and Laura Smith-Spark CNN
updated 9:17 AM EDT, Sat April 5, 2014

(CNN) -- A Chinese patrol ship searching for signs of Malaysia Airlines Flight 370 in the southern Indian Ocean discovered Saturday the pulsed signal used by so-called black boxes, state news agency Xinhua reported.

The signal reported -- 37.5 kHz -- "is the standard beacon frequency" for the plane's cockpit voice recorder and the flight data recorder, said Anish Patel, president of pinger manufacturer Dukane Seacom.

"They're identical."

The frequency was chosen for use in the recorders "to give that standout quality that does not get interfered with by the background noise that readily occurs in the ocean."

But he said he would like to see more evidence. "I'd like to see some additional assets on site quickly -- maybe some sonobuoys," he said, referring to 5-inch-long (13-centimeter) sonar systems that are dropped from aircraft or ships.

And he said he was puzzled that only one signal had been detected, since each of the recorders was equipped with a pinger, which is also called a beacon.

Other experts cautioned that no confirmation had been made that the signal was linked to the missing plane.

"We are unable to verify any such information at this point in time," the media office of the Joint Agency Coordination Centre said in an e-mail.

"We've had a lot of red herrings, hyperbole on this whole search," said oceanographer Simon Boxall, a lecturer in ocean and earth science at the University of Southampton told CNN. "I'd really like to see this data confirmed."

If this proves to be what investigators have been searching for, "then the possibility of recovering the plane -- or at least the black boxes -- goes from being one in a million to almost certain," he said.

But, he added, "It could be a false signal."

CNN aviation analyst David Soucie was less skeptical. "This is a pinger," the airplane accident investigator said. "I've been doing this a lot of years, and I can't think of anything else it could be."

Xinhua said the detector deployed by the Haixun (pronounced "high shuen") 01 patrol ship picked up the signal around 25 degrees south latitude and 101 degrees east longitude. "It is yet to be established whether it is related to the missing jet," it said.

Committees being formed

The announcement came nearly a month after Malaysia Airlines Flight 370 disappeared, and on the same day that the nation's acting transportation minister said three committees were being formed to tackle the disappearance of the flight.

One will tend to the families of passengers aboard the missing flight, the second will oversee the investigation team and a third committee will handle the deployment of assets, said Hishammuddin Hussein.

Malaysia will also appoint an independent investigator to lead an investigation team, the acting minister said.

The team will include an airworthiness group, looking at issues such as maintenance records, and an operations group to examine aspects such as flight recorders and operations. A medical and human factors team will investigate issues such as psychology, he said.

As well as Malaysia and Australia, the team will include representatives from China, the United States, the United Kingdom and France, he said.

Hishammuddin also addressed "unfounded allegations made against Malaysia," which, he said, "include the extraordinary assertion that Malaysian authorities were somehow complicit in what happened to MH370."

He added, "I should like to state, for the record, that these allegations are completely untrue."


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