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However, the 12-year-old Boeing jetliner wasn't configured to broadcast those definitive points of data, people being briefed on the investigation say. After not receiving new data from the 777 after its automated reporting system was switched off, the automated satellite pings—the digital equivalent of a handshake—originated at a ground stations and was transmitted up to the orbiting satellite high above the Earth's equator. The satellite relays the ping down to the aircraft below, effectively asking the jet if it is still able to send and receive data. After receiving it, Flight 370 transmitted a return ping back up to Inmarsat, which in turn relayed it to the ground station. Because the angle and distance of the aircraft relative to the orbiting satellite changed as the jet flew over the Earth's surface, each ping to Flight 370 gave Malaysian officials, the National Transportation Safety Board, the Federal Aviation Administration and the U.K.'s Air Accidents Investigation Branch enough information to plot the 777's speed, altitude and changing path. With the data at hand, investigators were unable to determine if the jet's pings were north or south of its last known primary radar sighting. Two points on the globe below the satellite, with mirror angles and equal distances from the satellite, left investigators to conclude the jet had sent its final satellite ping in the probable corridors to the north or south. The satellites "can't give straight directional" guidance, "therefore the calculation is looking left and right of the satellite," said an industry official briefed on the investigation. The estimated path "suffers from the fact that...the system wasn't set up for that." |
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A couple of questions from an obviously uninformed aviation layman...
Is it possible, if there was some sort of fire, the pilot could have landed on the ocean like Sullenburger, which is why there is no debris? (although, I guess there'd be lifejackets in that scenario). If the plane crashed "gently" somewhere, how long could the engines just run? |
Not very long I assume.
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If there is only one ping after loss of radar tracking, I get it. The article suggests otherwise though. If the only satellite receiving pings is in geosynchronous orbit and the plane coincidentally happens to be traveling along an equidistant arc, I get it. This isn't made clear by the article. What I'd like to know is how many pings were received, how frequently were they received, and how many of them were received while military radar was tracking the aircraft so they can get an idea of the direction, speed, and altitude at those data points and use that as a basis for analyzing the subsequent pings. |
Cops find five Indian Ocean practice runways in MH370 pilot’s simulator
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So, yesterday I was thinking the pilot's life was too good to snap and I was suspecting the young co-pilot...
I changed my mind, I think the pilot did it, there were a couple things going on with him. First, he's a very fervent supporter of the opposition party in Malaysia, which is not suspicious in itself, except the thoroughly corrupt Malaysian government brought some silly trumped-up charges of Sodomy (which is illegal there) against the opposition leader, and had him jailed hours before the flight. The pilot was such a gung-ho supporter that he attended rallies, may have attended the trial, and recently wore a T-shirt saying "democracy is dead". Second, his wife and kids moved out the day before the flight. So, both of these things happened at once, he doesn't seem to have any interest in those northern countries and if he was going to attack the Malaysian government he would have done it by now. As obsessed as he was with politics, seeing his political hero get jailed, having his family leave, he may have basically said "so long, cruel world", and wanted to kill himself but didn't want anyone to think he was a bad guy so he sneaks out to the Indian Ocean. |
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