Egypt Air flight MS804 missing!

Egypt Air flight MS804 missing!

Author
Discussion

xjay1337

15,966 posts

118 months

Thursday 16th June 2016
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I think that'd bring a lot of welcome closure.

CAPP0

19,590 posts

203 months

Thursday 16th June 2016
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Must be getting very close to the 30-day battery life for the black boxes now?

Puggit

48,452 posts

248 months

Thursday 16th June 2016
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10,000 feet apparently.

xjay1337

15,966 posts

118 months

Thursday 16th June 2016
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From the BBC link above.

Signals emitted by the recorders are expected to expire by 24 June, experts have warned.

and

The little evidence so far suggests a fire broke out in the front of the aircraft, so they will be keen to film and photograph that area. One experienced investigator who worked on the Lockerbie bombing told me bomb damage looks very different to fire damage.

slybynight

391 posts

121 months

Thursday 16th June 2016
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jmorgan said:
I understand the med is very deep in places .
No s**t - a quick Google Earth certainly enlightened me! Who knew? Thought I'd have a look at a few others... Caspian sea looks like a big puddle!

SilverSpur

20,911 posts

247 months

Thursday 16th June 2016
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slybynight said:
No s**t - a quick Google Earth certainly enlightened me! Who knew? Thought I'd have a look at a few others... Caspian sea looks like a big puddle!
It is a bit surprising for me that this area of the Med is deeper than most of the Atlantic Ocean. The Atlantic has some areas that are deeper, but the med is surprisingly deep given its overall size in comparison to the Atlantic.

red_slr

17,250 posts

189 months

Thursday 16th June 2016
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Reports CVR found.

Lefty

16,157 posts

202 months

xjay1337

15,966 posts

118 months

Thursday 16th June 2016
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If true, that should hopefully give a pretty good indication of what happened.

KTF

9,806 posts

150 months

Friday 17th June 2016
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NoddyonNitrous

2,122 posts

232 months

Friday 17th June 2016
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But recovered in several bits.

xjay1337

15,966 posts

118 months

Friday 17th June 2016
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Hopefully the data within is in tact, I wonder how long before initial findings are released.

Wozy68

5,391 posts

170 months

Friday 17th June 2016
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I only hope its just not Egyptians that are checking the data. ..... One hint of a terrorist plot and I have a feeling no data could be recovered.

Cobnapint

8,632 posts

151 months

Sunday 19th June 2016
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http://uk.reuters.com/article/uk-egyptair-airplane...

The Egyptians are saying the flight recorders are severely damaged and many take ages to fix.

You would have thought the construction of these things would have been robust enough to withstand either a small explosion or impact with the ground, let alone the sea. That's the whole point surely.



Blaster72

10,842 posts

197 months

Sunday 19th June 2016
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Cobnapint said:
http://uk.reuters.com/article/uk-egyptair-airplane...

The Egyptians are saying the flight recorders are severely damaged and many take ages to fix.

You would have thought the construction of these things would have been robust enough to withstand either a small explosion or impact with the ground, let alone the sea. That's the whole point surely.
They are designed to very high specs but impact at high speed with water is little different to high speed impact with the ground. The G forces involved can be absolutely enormous. Water just doesn't give like it does at lower speeds.

The article doesn't say whether the memory module is damaged by impact or by water getting inside. They have been sitting in seawater at some depth for quite a long time now.

Fingers crossed the data can be recovered despite any damage

Table below is from one of Honeywells combined Voice/Data recorders but gives an example of the spec they have to comply with.



Edited by Blaster72 on Sunday 19th June 17:41

jammy_basturd

29,778 posts

212 months

Sunday 19th June 2016
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What state were the records in from the Air France flight?

Xpuffin

9,209 posts

205 months

Sunday 19th June 2016
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djc206 said:
Normally seconds. For example I work at London ATC and I transfer aircraft to Kapteinlangzaam at Maastricht control. I transmit "MSR780 contact Maastricht control frequency 132.205", the pilot dials those six numbers up and away they go chatting to Maastricht.

Edit: having just read El Stoveys response I should probably add that my example is from the civilised world with well maintained adequate equipment. I can only imagine the standard of Cairo ATC

Edited by djc206 on Sunday 22 May 18:36
Do you work 134.900

Blaster72

10,842 posts

197 months

Sunday 19th June 2016
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jammy_basturd said:
What state were the records in from the Air France flight?
AF447? The FDR - only the memory module was found, it had detached from it's chassis. The CVR was recovered complete although some components on the memory boards were damaged.

All data was recovered from both.

It's worth noting though, although the impact with AF447 was at low speed (107kts), it was at a pitch up angle and a very high descent rate (10000ft+ per minute). The recorders sat in 5000M of water for around 2 years.

They did as they were designed to do and protected the data. The reported damage in this case may only be to a similar extent and there's nothing to say the data can't be recovered.

gothatway

5,783 posts

170 months

Sunday 19th June 2016
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This may well have already been asked, but why is the data not transmitted in real-time via satellite to ground stations ? Bandwidth, availability of satellites ?

Puggit

48,452 posts

248 months

Sunday 19th June 2016
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gothatway said:
This may well have already been asked, but why is the data not transmitted in real-time via satellite to ground stations ? Bandwidth, availability of satellites ?
It was certainly covered to death in the MH370 thread. Not that I can remember the answer hehe