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SAR S-92 Missing Ireland

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Old 4th Apr 2017, 12:28
  #721 (permalink)  
 
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Some of the Aberdeen crew change aircraft are equipped with a sliding main pax door. I was told in the past it was so they could be reconfigured as a spare SAR aircraft for Ireland if required.
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Old 4th Apr 2017, 12:36
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The Sea, very much like the Air, can be a cruel thing.
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Old 4th Apr 2017, 13:29
  #723 (permalink)  
 
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The missing crew members is awful news for their families.
Seconded. However, surely questions now need to be asked about PLB's and why they either (a) wern't carried or (b) didn't f**king work!

Fingers crossed they're found soon.
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Old 4th Apr 2017, 15:30
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PLB's are manually activated. You need to be conscious for them to work.
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Old 4th Apr 2017, 15:42
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Yep. Not only conscious, but in a physically capable and mindful state to activate it.
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Old 4th Apr 2017, 16:28
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Yep. Not only conscious, but in a physically capable and mindful state to activate it.
...and yet my Ryanair life jacket has a little light on it that illuminates on contact with water.

I do find it strange that in this day and age, my phone can tell me where I am yet we can't give these chaps and chappesses a simple PLB that is water activated or is automatically fired on an accelerometer.
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Old 4th Apr 2017, 17:10
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Originally Posted by Duchess_Driver
...and yet my Ryanair life jacket has a little light on it that illuminates on contact with water.

I do find it strange that in this day and age, my phone can tell me where I am yet we can't give these chaps and chappesses a simple PLB that is water activated or is automatically fired on an accelerometer.
No NVGs and now it appears they were equipped with PLBs that required manual activation rather than Saltwater! my guess this all comes down to COST

If this is the case I Hope all this will come out in the AAIU investigation.
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Old 4th Apr 2017, 17:12
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If you are in a flooded cabin or cockpit and your Flotation Device inflates....how does that help?

That would probably cause you to become trapped and drown you!
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Old 4th Apr 2017, 17:15
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Originally Posted by SASless
If you are in a flooded cabin or cockpit and your Flotation Device inflates....how does that help?

That would probably cause you to become trapped and drown you!


Unless I missed it, no one has mentioned jackets inflating upon immersion, only a light illuminating and PLB's activating?
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Old 4th Apr 2017, 17:49
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Just out of curiousity I googled water activated PLB and could not find any.
Anyone know of a source/manufacturer?
Found lots of PLBs but none that were auto activated in water.
Even found a yatching mag article which stated that while epirbs were automatic "legislation" prohibits water activated PLBs.
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Old 4th Apr 2017, 17:54
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In any case, if you are unfortunately trapped underwater, a water-activated PLB would be pointless even as an aid to recovering bodies due to the fact that VHF radio doesn't propagate well through seawater. I suppose you could carry sonar pingers but that seems a bit morbid.
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Old 4th Apr 2017, 18:04
  #732 (permalink)  
 
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So whats the latest assumption with this crash then?

Hover taxi to land - pulls up at the last moment to avoid rocks ahead and strikes the TR - yes?
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Old 4th Apr 2017, 18:09
  #733 (permalink)  
 
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Originally Posted by HeliComparator
In any case, if you are unfortunately trapped underwater, a water-activated PLB would be pointless even as an aid to recovering bodies due to the fact that VHF radio doesn't propagate well through seawater. I suppose you could carry sonar pingers but that seems a bit morbid.
Very true..I was just curious as to if water activated PLBs actually are available.
It may be useful technology in the case of a ditching where folks are floating but injured or hypothermic and therefore unable to manually activate a PLB.
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Old 4th Apr 2017, 18:17
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Originally Posted by albatross
Very true..I was just curious as to if water activated PLBs actually are available.
It may be useful technology in the case of a ditching where folks are floating but injured or hypothermic and therefore unable to manually activate a PLB.
In the N Sea this is handled by an ADELT - although survivors on the surface drift away from the fuselage, hopefully the ADELT drifts at a not too dissimilar rate. That said they don't have a great track record of actually activating when needed! I've no idea whether the Irish SAR aircraft have them, but it would seem sensible.
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Old 4th Apr 2017, 19:00
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Originally Posted by HeliComparator
In the N Sea this is handled by an ADELT - although survivors on the surface drift away from the fuselage, hopefully the ADELT drifts at a not too dissimilar rate. That said they don't have a great track record of actually activating when needed! I've no idea whether the Irish SAR aircraft have them, but it would seem sensible.
Looked at some photos...of Irish SAR 92s ...ADELT on port side of the tailboom just FWD of the registration.
Usual spot for one on the 92.
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Old 4th Apr 2017, 19:10
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Originally Posted by Thomas coupling
So whats the latest assumption with this crash then?

Hover taxi to land - pulls up at the last moment to avoid rocks ahead and strikes the TR - yes?
The last info seen here seems to be 70 kts down to 9 kts at 270 feet.
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Old 4th Apr 2017, 19:13
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The apparent lack of success from deployed ADELT's is baffling. I know of one case where a beacon fell from a thousand feet on land and worked perfectly.
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Old 4th Apr 2017, 19:23
  #738 (permalink)  
 
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I presume a water activated PLB would have to be protected from rain? Oh and from any water in the cabin when hoisting. Also I presume the rescue diver wouldn't have one.
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Old 4th Apr 2017, 19:26
  #739 (permalink)  
 
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Originally Posted by albatross
Just out of curiousity I googled water activated PLB and could not find any.
Anyone know of a source/manufacturer?
Found lots of PLBs but none that were auto activated in water.
Even found a yatching mag article which stated that while epirbs were automatic "legislation" prohibits water activated PLBs.
Automatic PLBs have been standard issue for NS Oil pax for many years. Sea Marshal is one make though there are others. Nowadays they are built into the lifejacket which for aviation is manual-inflate only.
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Old 4th Apr 2017, 19:42
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Thanks Concentric...just what I needed to know.

Should have known all that. Just having a senior morning I guess.
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