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1 month into search, desperate hunt is on for Flight MH370 'black boxes'



PERTH, Australia (AP) -- Four weeks after the Malaysia Airlines jet vanished, two ships deployed sound locators Friday in the southern Indian Ocean in a desperate attempt to find the plane's flight recorders before their signal beacons fall silent.

Officials leading the multinational search for Flight 370 said there was no specific information that led to the underwater devices being used for the first time, but that they were brought into the effort because there was nothing to lose.

The air and sea search has not turned up any wreckage from the Boeing 777 that could lead searchers to the plane and perhaps its flight data and cockpit voice recorders, or "black boxes."

The recorders could help investigators determine why the Malaysia Airlines plane, which disappeared March 8 while en route from Kuala Lumpur to Beijing with 239 people aboard, veered so far off-course.

Beacons in the black boxes emit "pings" so they can be more easily found, but the batteries only last about a month.

Two ships with sophisticated equipment that can hear the pings made their way Friday along a 240-kilometer (150-mile) route investigators hope may be close to the spot where officials believe Flight 370 went down.

"No hard evidence has been found to date, so we have made the decision to search a sub-surface area on which the analysis has predicted MH370 is likely to have flown," Cmdr. Peter Leahy, the commander of military forces involved in the search, said in a statement.

Australian Air Chief Marshal Angus Houston, head of the joint agency coordinating the operation, acknowledged the search area was essentially a best guess. He noted that time is running out to find the recorders.

"The locator beacon will last about a month before it ceases its transmissions - so we're now getting pretty close to the time when it might expire," Angus Houston said.

The Australian navy ship Ocean Shield towed a pinger locator from the U.S. Navy, while the British navy's HMS Echo, equipped with similar gear, looked for the recorders in an area that investigators' settled on after analyzing hourly satellite pings the aircraft gave off after it disappeared.

That information, combined with data on the estimated speed and performance of the aircraft, led them to that specific stretch of ocean, Houston said.

Because the U.S. Navy's pinger locator can pick up signals to a depth of 6,100 meters (20,000 feet), it should be able to hear the plane's data recorders even if they are in the deepest part of the search zone - about 5,800 meters (19,000 feet). But that's only if the locator gets within range of the black boxes - a tough task, given the size of the search area and the fact that the pinger locator must be dragged slowly through the water at just 1 to 5 knots, or 1 to 6 mph.

The type of locator being used is a 70-centimeter (30-inch) cylindrical microphone that is towed underwater in a grid pattern behind a ship. It's attached to about 6,100 meters (20,000 feet) of cable and is guided through the ocean depths by a yellow, triangular carrier with a shark fin on top. It looks like a stingray and has a wingspan of 1 meter (3 feet).

Finding floating wreckage is key to narrowing the search area, as officials can then use data on currents to try to backtrack to where the plane hit the water, and where the flight recorders may be.

But with no wreckage found so far, officials can't be confident they're looking in the right place, said Geoff Dell, discipline leader of accident investigation at Central Queensland University in Australia.

"They might be lucky and they might start smack bang right over the top of it," Dell said. "But my guess is that's not going to be the case and they're in for a lengthy search."

The area where crews are looking for the devices lies within a larger 217,000-square-kilometer (84,000-square-mile) search zone that 14 planes and nine ships crisscrossed Friday in hopes of finding floating debris. The search zone is about 1,700 kilometers (1,100 miles) northwest of Perth on Australia's west coast.

Ships sighted a number of objects but none were associated with the missing plane.

The search area has shifted each day as investigators continue to analyze what little radar and satellite data is available while factoring in where any debris may have drifted.

Australia is coordinating the ocean search, and the investigation into the plane's disappearance is ultimately Malaysia's responsibility. Australia, the U.S., Britain and China have all agreed to be "accredited representatives" of the investigation.

Four Australian investigators were in Kuala Lumpur to help with the investigation and ensure information on the aircraft's likely flight path is fed back to search crews, Houston said.

---

Associated Press writers Eileen Ng and Gillian Wong in Kuala Lumpur, Malaysia, Rod McGuirk in Canberra, Australia, and Kristen Gelineau and Rohan Sullivan in Sydney contributed to this report.

Join the discussion

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kati7 April 04 2014 at 7:38 PM

it's strange that with "6 degrees of separation" that no one has reported first-hand knowledge that this plane was landed somewhere

Flag Reply +4 rate up
Fred April 04 2014 at 11:08 PM

How Can An Aircraft That Big Simply Disappear Like That? They Need To Look
Where They Don't Expect It To Be.

Flag Reply +1 rate up
jpark377 April 04 2014 at 11:09 PM

This is an old story, by now. Let CNN and AOL cover it at their expense: over 400 people murdered in Chicago last year, and a plane that disappeared over 8000 miles from here is the story? I'm sure more than 290 have been killed by their own government in Syria tonight, but the lamestream media has no interest in covering that story.

Flag Reply +2 rate up
NIK ROX April 04 2014 at 11:13 PM

That plane didn't crash. It landed somewhere and is going to be used in a terrorist plot in the near future. Let's just hope our government doesn't rule out that cenario.

Flag Reply +5 rate up
2 replies
whdlsn NIK ROX April 04 2014 at 11:15 PM

Yes, thank you! It's likely in a muslim country being repainted as we speak.

Flag Reply +1 rate up
EquiNan NIK ROX April 04 2014 at 11:29 PM

Agree! My gut feeling is Obama fully knows what really happened. Diego Garcia has a U.S. Air base with 12,000 foot landing strips, plenty of room for a 777 to land.

Flag Reply +1 rate up
oneriviman April 04 2014 at 11:13 PM

My opinion,maybe not yours, is that, this flight was hijacked and, flew to Pakistan. Just my opinion, but, I know you have your own. This is mine, oh,well.

Flag Reply +4 rate up
1 reply
EquiNan oneriviman April 04 2014 at 11:24 PM

I totally agree, it is not at the bottom of the Indian Ocean, they are wasting time and money searching there. Diego Garcia was quite reachable to refuel too. My opinion too, but I believe our Sunni Muslim in secret president is fully aware of exactly what happened to the plane.

Flag Reply +2 rate up
radarmannoshoes April 04 2014 at 11:21 PM

Batteries that aren't used can last years. That's the weak link in the black boxes. There should be a backup system where the transmitter battery power is switched off. It's not continously transmitting. It only transmits when told to do so by a nearby signal.

Flag Reply +1 rate up
1 reply
accsport radarmannoshoes April 05 2014 at 4:07 AM

That is not how the Flight Data Recorder is designed to work per FAR's. There is no weak link in that system as the Flight Data Recorder only transmits its call for help when it has been told something went wrong. The FDR can operate for a "MINIMUM" of 30 days and at 20,000 feet below the surface.

Flag Reply 0 rate up
birds2nv April 04 2014 at 11:26 PM

No debris field because the flight landed in a country friendly to terrorism. The passengers are probably not so lucky. Retired Lt Gen. McInerney made a statement a few weeks ago that sources he knew of told him the jet landed in Pakistan. I am sure we have spy satelites trained over that area.

Flag Reply +6 rate up
fineslady1 April 04 2014 at 11:27 PM

ha!! why didnt they listen to the fisher men and other eye whitnesses who saw that plsne land on deigo island ?? Usa rented secreat base(like rosewell0 owned by the UK... They never checked.. why?? because its there ... hidden for what ever reason??? where are the people .. just return them!!

Flag Reply +3 rate up
Ghetto Cat April 04 2014 at 11:30 PM

If it IS stolen as they say, it is a whole different ballpark!
Another giant military headache.

Flag Reply +1 rate up
nsgreenparty April 04 2014 at 7:04 PM

But... It crashed in the Indian Ocean. I know this because the news said so.

Flag Reply +1 rate up
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