#MH370: Sonobuoys detect possible signals from black boxes

April 10, 2014

Thursday, April 10, 2014

Good morning:

I have more good news to report in the search for Malaysia Airlines Flight MH370.

CNN is reporting this morning that an Australian P3 Orion has picked up signals during Thursday’s search from some of the 84 sonobuoys that were dropped into ocean in the vicinity of the location where the Ocean Shield picked up signals from the black boxes with the towed pinger locater (TPL).

Sonobuoys, which float on the surface, dangle a hydrophone (i.e., an underwater microphone) attached to a 1,000 foot cable. The sonobuoy broadcasts any radio signal picked up by the hydrophone.

Searchers are using the sonobuoys to precisely locate the black boxes on the ocean bottom, which is 14,800 feet deep.

The electronic information picked up by the sonobuoys will be evaluated Thursday night.

Depending on the results, the Ocean Shield may deploy the Bluefin 21 to find the wreckage and and photograph it.


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#MH370: Chinese ship detects possible signal from black box

April 5, 2014
A Malaysia Airlines Boeing 777

Have the searchers located the black boxes?

Saturday, April 5, 2014

Good morning:

I have an exciting development to report.

Al Arabiya News is reporting:

As the search for missing Malaysian Flight MH370’s black box carries on, China’s official news agency said Saturday a Chinese ship, part of the multinational search effort looking for the missing Malaysia Airlines plane, has detected a “pulse signal” in southern Indian Ocean waters.

A black box detector deployed by the vessel, Haixun 01, picked up a signal at 37.5Hz per second Saturday at around 25 degrees south latitude and 101 degrees east longitude, the Associated Press reported the agency as saying.

However, the ship’s team could not establish whether that the signal was related to the missing jet.

This is the black box frequency and the location is 956 nautical miles (1,100 miles) northwest of Perth (heading 129.16). The depth of the ocean is 15,509 feet.

We will have to wait and see if this can be verified.


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#MH370: Search moves underwater

April 3, 2014
A Malaysia Airlines Boeing 777

The search for MH370 is moving underwater

Thursday, April 3, 2014

Good morning:

The search for #MH370 is moving underwater 26 days after the Boeing 777-200 disappeared on a flight from Kuala Lumpur to Beijing with 227 passengers and a crew of 12. Searchers are running out of time as batteries on the black boxes approach their 30 day expiration and vast amounts of sea trash and inclement weather continue to prevent identification of debris from the crash.

The Wall Street Journal reports,

This week, the search was joined by a U.K. military submarine equipped to detect signals from the flight-data and cockpit-voice recorders, whose beacons could run out of power as soon as this weekend. The HMS Tireless bolsters the capabilities of the multinational team, which has been relying on a combination of satellite images, radar data and crews scanning through aircraft windows to search an area the size of Italy for floating debris.

The nuclear-powered submarine, built for the Royal Navy as a Cold War attack vehicle, has equipment on board that may help it to pinpoint signals from Flight 370’s recorders. It could also be used to search for aircraft wreckage along the largely undisturbed seabed, a spokeswoman for the U.K.’s defense ministry said.

The HMS Tireless will be joined by Ocean Shield, an Australian navy ship that will be towing a U.S. Navy black-box locator. The device is called a Towed Pinger Locator (TPL). It’s a passive listening device that can detect signals up to 2 miles away while operating down to a maximum depth of 20,000 feet.

Eight aircraft and nine ships are participating in the Thursday search. No discoveries have been reported.

Meanwhile, the FBI has completed its investigation of the pilot’s flight-simulator hard drive and concluded that it found nothing suspicious.

You are up to date.

Photo by Aero Icarus released under a Creative Commons Share Alike license.


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