Kikapu wrote:Paphitis wrote:Kikapu wrote:It was reported yesterday in the news that the B-777 has 4 separate emergency signal devices in case of a crash that would be picked up by the satellites. Perhaps something like EPIRPs I talked about earlier that sailboats carry. One in the cockpit, one in the fuselage (did not say where) and one in each of the 2main doors, where the slide can be used as a raft. I'm sure they meant that the device is in the deflated raft that is in the door of the plane. These devices will send signals automatically of its location when they come in contact with water, or set off manually. If the plane crashed into the ocean and broke up but parts where the devices are stayed afloat, there would be signals sent to the satellites giving its EXACT position. No such signals have been picked up.
They are investigating the possibility that the aircraft did not break apart at all. Just like US Airways 1549.
The devices are Emergency Locator Transmitters. They are exactly the same as what is on the Black Box.
These devices are not mandatory and it will be up to the Investigators to see whether these were maintained. The one in the cockpit would not have been activated at all. The Emergency Slide ones do not activate unless the Emergency Slide is deployed or need to be manually turned on as you leave the aircraft.
On the other hand, it could be that some did activate, hence the 4 detentions.
Also important to note that only one of the detentions has been searched for within a 10 mile radius of where it was detected. The other 3 will be searched for in a similar fashion with the weaker ones having a far greater radius. The circles will overlap but there is a lot of ocean floor they need to survey still.
I don't think they were talking about the same devices as you are, since the devices they were referring to involves sending signals to satellites giving their locations just as EPIRP would do. Black Box signals does not involve satellites, does it?
I don't think they know what they are talking about anymore. So far all their assumptions have been wrong, therefore the aircraft sinking without breaking up is just one more assumption on their part. If the aircraft did not break up on impact with the water, then no one tried to leave the aircraft but just sunk to the bottom of the ocean. Really? People should stop making comparison to the Hudson River incident to the MH370. Sounds more and more people are trying to make excuses as to why they have been wrong so far from day one. They keep coming up with more and more unlikely scenarios.
Essentially EPIRBs and ELTs are the same.
They can also be picked up by the COSPAS-SARSAT network if they are on the surface. Not possible if they are 4500m underwater. You would need a Sonar for that!
If MH370 crashed on land, then SARSAT will know where it is.
Once again, there are no assumptions, just "most probable causes"
The rest such as the most likely point of entry and the detections are all based on science.
They know the aircraft crashed in the Indian Ocean. Scientific evidence has determined that!
When they lack the physical evidence such as debris, they analyse whether it is possible for the aircraft to ditch completely intact. The answer to that is YES it is possible. This would have been thought about from the very beginning.