Malaysia Airlines 'loses contact with plane' (and search effort updates)

[_neutrino Veteran]

they have been stating all morning, that there are several plans and norwegian boats on the scene and they have not spotted anything yet. Assuming that the photos are showing something under the water not something floating.

[Praetor]

they have been stating all morning, that there are several plans and norwegian boats on the scene and they have not spotted anything yet. Assuming that the photos are showing something under the water not something floating.

 

i don't get it; Norwegian boats where Australia is much nearer?? Possibly they aren't any AUS boats near, but still...

 

edit: oh i totally forgot that the globe is round, my bad! :laugh: :laugh: :rofl:

[+primortal Subscriber²]

If this is true; shouldn't the black box be emitting a signal?

[Praetor]

If this is true; shouldn't the black box be emitting a signal?

 

and it be emitting, don't forget that it has a limited range. it's a big ocean, you know?

[Vykranth]

There are plenty of floatsam in all oceans and it is not unheard of ships losing several containers during storms.

 

http://www.maritimedenmark.dk/?Id=17587

 

 

Around 5 pm on Friday February 14th 2014, Maersk Svendborg lost between 200 and 300 containers, according to Lloyds List. During a severe storm, near Cap Finistere by Bretagne, the containers began to fall overboard. The ship was en route from Rotterdam to the Suez Canal.

Luckily there were no hazardous materials in the containers that the ship lost. The ship immediately warned the French authorities about the drifting containers and they sent the warning to all other ships in the area. Supposedly there are many damaged containers still on board the ship.

Maersk Svendborg was around 60 nautical miles from Brest, when the first container fell into the sea. The waves were up to eight meters high and there was a wind speed of up to 46 meters per second, which is equivalent to about 165 kilometers per hour.

 

Some shipping containers sinks, other floats: it depends on the cargo inside and that makes navigational hazards.

 

This is a lead and it is investigated so that is good.

We will get some answers once the said debris are found and verified by ships crews.

Given the fact that the zone is far from Australia and that the weather is apparently not that good there, it may take some time.

[Richteralan]

http://www.abc.net.au   http://www.news.com.au

These won't be part of the plane. From what it looks now, I am guessing the plane won't be found at all. Because it never crashed and Malaysian airline/government won't announce the truth.

[neufuse Veteran]

Wouldn't a shipping container sink...I doubt they're water tight...might stay afloat if it was, but if water got in that would sink for sure.

 

depends on what's in them... there have been shipping containers full of Styrofoam products that have fallen off ships and floated... and some containers seal air tight, which would make it possibly a buoyant thing and float alright or at least not sink to far below the surface

[Mugwump00]

Anyone thinking the further they look south, the more large floaty objects they're going to find..? :hmmm:

... and does anyone have a link to why they withdrew interest in the earlier Chinese satellite images of 'large objects', and what they explained them as actually being, please?   Dismissed quickly... explained.. never..?

[FloatingFatMan]

If this is true; shouldn't the black box be emitting a signal?

 

The batteries would be just about drained by now; they're only good for about 5 days iirc.

[+primortal Subscriber²]

The batteries would be just about drained by now; they're only good for about 5 days iirc.

According to news reports the black box batteries last 30 days before going dead.  There's about 18 +/- days left.

[FloatingFatMan]

According to news reports the black box batteries last 30 days before going dead.  There's about 18 +/- days left.

 

And several interviews I've seen on the BBC news said about 5 days.

[Skiver Veteran]

And several interviews I've seen on the BBC news said about 5 days.

Just did a quick google search, none suprisingly all results are in reference to this incident but at least the first 4 or 5 quote 30 days. TBH I would rather find some form of official airline guidance on this rather than a news site but thats all that came up in a quick search.

[COKid]

New day. New rumor. This whole story has been a godsend for CNN. Every time some Tom, Dick, or Harry says something it's BREAKING NEWS.

[Praetor]

The batteries would be just about drained by now; they're only good for about 5 days iirc.

 

i thought it would last for 30 days; in fact the Air France BB were retrieved several days after the crash.

[Hum]

Just did a quick google search, none suprisingly all results are in reference to this incident but at least the first 4 or 5 quote 30 days. TBH I would rather find some form of official airline guidance on this rather than a news site but thats all that came up in a quick search.

 

I posted this early on: Posted 09 March 2014 - 05:58

 

https://www.neowin.net/forum/topic/1203937-malaysia-airlines-loses-contact-with-plane-and-search-effort-updates/page-5

 

If a plane crashes into the water, this beacon sends out an ultrasonic pulse that cannot be heard by human ears but is readily detectable by sonar and acoustical locating equipment. There is a submergence sensor on the side of the beacon that looks like a bull's-eye. When water touches this sensor, it activates the beacon.

 

The beacon sends out pulses at 37.5 kilohertz (kHz) and can transmit sound as deep as 14,000 feet (4,267 m). Once the beacon begins "pinging," it pings once per second for 30 days. This beacon is powered by a battery that has a shelf life of six years. In rare instances, the beacon may get snapped off during a high-impact collision.

 

The ELT is 2 days:

 

Transmission duration : 48H min 100mW PERP

 

http://www.airsatori.com/doc/AP%20brochures/elt_90_91.pdf

 

The two aviation recorders currently combined in a single assembly referred to by the media as a "black box" are the Flight Data Recorder and a Cockpit Sound Recorder also identified as a Cockpit Voice Recorder.

 

http://www.airlines.org/Pages/Flight-Data-Recorders.aspx

 

All large commercial airliners are equipped with two types of devices to record information for the purpose of investigating accidents and incidents. The cockpit voice recorder (CVR) records intercom and radio communications of the flight crew, the aural warnings of flight systems, and the sounds of the cockpit environment. The other so-called "black box" is the flight data recorder (FDR), which chronicles the airplane?s speed, position, altitude, and a number of other flight parameters. Federal Aviation Regulations (e.g., 14 CFR 121) require operators of commercial airplanes to carry and use these recording devices.

 

On July 17, 1997, FAA adopted the regulations to again increase the minimum number of parameters that FDRs must record. Under this "97 rule," airlines were required to modify, by August 20, 2001, airplanes manufactured before October 12, 1991, to digitally record either 18 or 22 parameters, depending on whether or not the plane was equipped with a flight data acquisition unit. By the same deadline, airlines modified newer airplanes to record 34 parameters. Airplane manufacturers modified airplanes manufactured after August 18, 2000, to record 57 parameters, and airplanes made after August 19, 2002, must record 88 parameters. These parameters are derived from scores of sensors imbedded throughout the airplane - more than 1,100 sensors are needed in some models to collect 88 parameters. Collectively, this array of sensors reads not only the status of key data items, such as altitude, but documents the overall performance of systems, including: engines; navigational aids; warning systems; hydraulic systems; electrical systems; and flight controls. Current FDRs must retain the most recent 25 hours of flight data.

[Skiver Veteran]

I posted this early on:

 

https://www.neowin.net/forum/topic/1203937-malaysia-airlines-loses-contact-with-plane-and-search-effort-updates/page-5

 

If a plane crashes into the water, this beacon sends out an ultrasonic pulse that cannot be heard by human ears but is readily detectable by sonar and acoustical locating equipment. There is a submergence sensor on the side of the beacon that looks like a bull's-eye. When water touches this sensor, it activates the beacon.

 

The beacon sends out pulses at 37.5 kilohertz (kHz) and can transmit sound as deep as 14,000 feet (4,267 m). Once the beacon begins "pinging," it pings once per second for 30 days. This beacon is powered by a battery that has a shelf life of six years. In rare instances, the beacon may get snapped off during a high-impact collision.

No source?  :shiftyninja:

[Hum]

No source?  :shiftyninja:

Ka-pow ... straight from the horse's data sheet:

 

http://www.l-3ar.com/pdf/datasheets/MKT068-AP_SRVIVR_12-12rev4.pdf

[Turk.]

Planes involved in southern search corridor

Australia 5

Indonesia 4

Japan 4

China 3

Malaysia 2

India 2

South Korea 2

New Zealand 1

US 1

UAE 1

http://www.abc.net.au/news/2014-03-21/bad-weather-hampers-search-for-possible-mh370-debris/5335582

[riahc3]

No source?  :shiftyninja:

 

 

Ka-pow ... straight from the horse's data sheet:

 

http://www.l-3ar.com/pdf/datasheets/MKT068-AP_SRVIVR_12-12rev4.pdf

Skiver, you just got owned :laugh: and I usually don't say that!

Anyways, so the bad weather is delaying the search right?

[Raa]

 

Anyways, so the bad weather is delaying the search right?

It was quite dark there until a few hours ago. :p

[Hum]

 

 

Skiver, you just got owned :laugh: and I usually don't say that!

Anyways, so the bad weather is delaying the search right?

They are reporting better weather today, in the search area.

[Hum]

'ED-56' is a European Aviation Safety Agency standard, industry crash survivability requirements.

 

Technical Standard Orders (TSO)

A TSO is a minimum performance standard for specified materials, parts, and appliances used on civil aircraft. When authorized to manufacture a material, part, or appliances to a TSO standard, this is referred to as TSO authorization. Receiving a TSO authorization is both design and production approval.

 

 

Apparently flight MH370 carries a Honeywell 'Black box', and 30 days is the standard:

 

http://aerospace.honeywell.com/~/media/UWSAero/common/documents/Data-_Combined_Recording.pdf

[Hurmoth]

Am I reading it correctly that the black box would be useless if it did crash in salt water after 30 days in 10 feet of water? The area where those objects were found as an average depth of 3900 meters, way surpassing that limit.

[The Evil Overlord]

Am I reading it correctly that the black box would be useless if it did crash in salt water after 30 days in 10 feet of water? The area where those objects were found as an average depth of 3900 meters, way surpassing that limit.

unless I'm mistaken, I believe it's to do with salt water corroding parts inside, so partly yes, though bonalste might be a better person to ask, as he has civil aviation knowledge

(if you needed more covert, then I'd recommend McKay)

[Praetor]

Am I reading it correctly that the black box would be useless if it did crash in salt water after 30 days in 10 feet of water? The area where those objects were found as an average depth of 3900 meters, way surpassing that limit.

 

i think it means that the minimum is 10 feet (that's the test value), but it can sustain 20k for 30 days in deep sea pressure.