| General > General Technical Chat |
| CVR of crashed 737 Sriwijaya Air SJ182 recovered ... in pieces |
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| aqarwaen:
even if flash memory is damaged,should it be not be possible to recover data directly from dies or atleast partialy,if u have enough money? |
| Homer J Simpson:
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| Halcyon:
I've actually had some involvement in recovering data from an aircraft crash. Flight voice/data recorders are designed so that even if the controller and electronics that operate the device are broken or involved in a fire, the actual recording medium is designed to be removed on its own and read back. It just depends on the device. --- Quote from: aqarwaen on January 18, 2021, 09:09:55 pm ---even if flash memory is damaged,should it be not be possible to recover data directly from dies or atleast partialy,if u have enough money? --- End quote --- Yep, this is the way I've done it before (and it's not super expensive to do). My latest job was reading out the flash from an older iPhone. Managed to get a 50% read which still resulted in some usable data. The other half of the chip was buggered. |
| station240:
--- Quote from: fcb on January 15, 2021, 03:35:20 pm ---The locator beacon (which works for 30 days), is typically attached to the memory block, and is also hardened. CVR and FDR are located in the rear of the plane - I'm not sure I've seen pictures of one as badly damaged as the OP posting, must have hit the ocean very hard. --- End quote --- Last transponder transmission from 75ft above the water, was 358knots (660km/hr). I feed that speed into a crash test calculator (for car crashes), ended up with 5,000G An undamaged CVR looks like this: The Oil filter sized can is the memory module, attached to the right of it is the tube containing the locator beacon. It's possible for the beacon to be broken free, making the memory module harder to find. The two destroyed PCBs posted earlier, are in the top and bottom halves of the thin box at the base. |
| tooki:
--- Quote from: BravoV on January 15, 2021, 12:13:37 pm ---These are the cockpit voice recorder recovered in pieces from the recent 737 plane crash Sriwijaya Air SJ182, while the FDR was recovered 1st still looks fine physically. Assuming the soldered memory chips are still there, I guess its very challenging to recover the recorded cockpit voice with this condition. :'( :-// --- End quote --- If that’s what the unhardened parts look like, I’d guess the chances of data recovery from the actual memory module are very, very high. |
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