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@sk999 ... On recovery...
Egyptian authorities stated that the vessel John Lethbridge is making a map of the different subsea area's. A map or maps that can be used for the recovery later. If they decide on doing that later. Decision on if, and what, and how, will be recovered will probably have to wait for the first analysis of the recorders. And be supported by the photo mosaic and various maps. Gear and data processing capabilities on board of that ship, including 3D sonar imaging, can easily cover the depths of around 3,000m. This based on the published specs of DOS. |
Wondering again, looking at several recent accidents, in virtually all of them, the FDR system has been severely damaged.
It does not appear that the current design is working. |
Originally Posted by underfire
(Post 9416874)
Wondering again, looking at several recent accidents, in virtually all of them, the FDR system has been severely damaged.
It does not appear that the current design is working. They are two or more pieces for a reason. Ditto for the CVR .. |
underfire;
Your point has been addressed twice now. What further facts are you using to support "wondering again"? If I may, it is apparent that you lack the knowledge necessary to make an informed comment. May I suggest that the BEA document on data recorders is worth reading. It can be found at https://www.bea.aero/uploads/tx_scalaetudessecurite/use.of.fdr_01.pdf To put it in basic terms, the record of data retrieval is the statistic to examine, not the condition of the entire recorder installation. To my memory there are only 2 examples* in which the aircraft crashed into the ocean from which the recorders themselves were not recovered. There are no examples of actual memory-module damage. The delay in the 30-day required reporting period is not without precedent. However, as D Bru states, there are some things that can and certainly should be addressed while the data is recovered. Indeed, this is what occurred with the BEA's 1rst and 2nd Interim Report on the loss of AF447. PJ2 * MH370, Asiana 991 |
Originally Posted by D Bru
(Post 9416595)
Thanks, much appreciated.
Yes, I was hinting at that also, one would expect an interim report within one month. One of the main issues one expects from such official interim report is of course the source and timing of this last radar contact, secondary or primary, following the cessation of the A/C transponder. Remember that the Greek defence ministers' claim is that the manoeuvres of MS804 (90° left, followed by 360° right, rapidly descending) took place between 02:27 and 02:29 local, while the so-called transponder data recorded by several flight tracking sites show a continued constant heading and altitude until about 02:30. This is crucially linked to the length/duration of FDR and CVR afterwards and what those data could bring into the investigation in addition to what we know. Of course we can't discount FDR/CVR readout related clues before the general electric failure, these may be very important of course, but it seems to me that the events afterwards are equally important, if not more. Anyhow, this first interim report is going to be already very important. Pretty unique it's not yet there (public). |
New Twist In EgyptAir 804
FWIW: EgyptAir crash: Paris prosecutor opens manslaughter inquiry - BBC News
Not much other info. at this time. |
No surprises, SOP in France.
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Not without good cause or reason. Possibly to protect/secure evidence.
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No, as Dave said it's SOP in France whenever French nationals are killed. Blame Napoleon if you want a scapegoat.
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No one cares to comment on the fact that we're now learning the actual FDR/CVR memory chips are damaged, not just the "casing" or support equipment?
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It is difficult to comment on anything since the original thread has been locked - and gets unlocked on random occasions here. Anyone know why this is happening?
Legal maneuverings with threats of monetary damage from PPRune by EgyptAir for a free and open discussion of known facts and speculation? |
I find it very strange that these devices are in the condition reported when found. Perhaps they were in a readable condition, but after being put in ovens and belted with hammers, by the time they get to France, they may actually resemble the reported condition.
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vapilot2004, More to do with the fact that there's not much new to say at present and there are too many posters who can't be bothered to read back through the many pages and post ideas/theories/garbage/whatever which has already been posted with repeating monotony by previous posters who also couldn't be bothered to read the entire thread!
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You think so HT? That's something new here - the closing of threads in the early stages, not the posting of mass gibberish or tales from those with axes to grind.
Thank you for that. |
Crashed EgyptAir flight data recorder successfully repaired: investigation committee
Crashed EgyptAir flight data recorder successfully repaired: investigation committee | Reuters |
It is surprisingly difficult to make solid state memory fail. I hope that part of the investigation highlights what the 'damage' to the memory was so that the DFDR and CVR manufacturers can modify the chips to make them more resilient presumably to seawater at high pressure.
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Originally Posted by DaveReidUK
(Post 9422278)
No surprises, SOP in France.
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It is surprisingly difficult to make solid state memory fail. I hope that part of the investigation highlights what the 'damage' to the memory was so that the DFDR and CVR manufacturers can modify the chips to make them more resilient presumably to seawater at high pressure. |
I understand there was salt water ingress into the module.
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CVR Repaired
The CVR has now been 'repaired' and analysis will begin 'within hours'.
BBC: EgyptAir crash: Flight data recorder repaired - investigators - BBC News Interesting that it will be returned to Egypt for analysis. I'll bet the French have copied the data first though. Who will leak the contents first I wonder. |
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