Posted on 04/28/2014 7:52:32 PM PDT by SunkenCiv
If that had happened then atleast one of the 4 ELTs onboard would likely have activated -- and yet none of them did.
Depends on how it hit. Then too, nobody knew exactly where it went down. Nobody heard any ELT signals. If they landed on some remote runway for whatever reason, I bet everyone’s dead by now.
Obviously, they took the wings and tail assembly off it for the trucking.
The airplane sank only partially. The left engine came off and sank in 65 feet of water.
More pix here |
It was judged to be a write-off, although one salvage company claimed that, if it had been salvaged properly, it could have been repaired for only $20m, a third the cost of a new airplane.
 At the Carolinas Air Museum with wings and tail reattached |
According to the manufacturer, Dukane Seacom, the frequency is 37.5kHz ± 1kHz. Nine milliseconds, approximately once per second. They also make a model that operates on 8.8kHz. They claim, "The lower frequency acoustic signature of the DK180 travels farther than existing ULDs thus improving locating efforts."
The protocol allows for the pinger detector to send a signal to get the aircraft id and air craft serial id number.
The data sheet makes no mention of encoding any information into the ping, although that would obviously be nice. But, really, how many sources of nine millisecond pings once a second on that frequency can there be in the South Indian Ocean?
I would think a two-way protocol would lengthen battery life by requiring the pinger to send only when it receives a poll from a search vessel. However, ensuring that the device can hear a poll reliably would be a challenge and an additional point of failure.
A two-way protocol would also allow a single search vessel to get ranges to the pinger from a number of different points, allowing its position to be determined. However, if there are multiple search vessels within range of a send-only beacon, they can compare ping arrival times and work out its location from that data, combined with their own positions at the time.
Remember the Air France plane that pancaked
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Air France belly flopped at terminal velocity ,, and it was an Airbus so of course the tail fell off well before it hit.. we don’t know how this one landed, if it landed well there will be minimal debris.
not including Airport ‘77
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That was a movie... in real life the plane would have filled with water in minutes ,, and as the pressures in and out would be equal the fuselage would remain intact.
Right now it’s all speculation.
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