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EC135 missing in NSW

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EC135 missing in NSW

Old 1st Dec 2015, 20:09
  #101 (permalink)  
 
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RVDT wrote "a PU tape maybe lifted or split after a minor impact with something?

See for your self.


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Old 2nd Dec 2015, 02:53
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Damage repair

Very tragic and we will have to wait for the report as we all know; however, the word 'around the campfire' in Europe, and this is a rumour site remember, is that Mr Green did not inform the factory of his bush repair until he was back in Sydney.
Mass balancing and tracking come to mind...
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Old 2nd Dec 2015, 18:07
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RVDT:

I guess you're just the type I was trying to describe, perhaps.

Green: Hello is that airworthiness, Eurocopter?
Eurocopter: Yes.
Green I am license number and approval number ^&89($%.
Eurocopter: And?
Green: I just clacked a blade in the boondocks and repaired it i.a.w. BCAR A3-25 sub section 3(b).
Eurocopter: Did you cure it for the full 12 hours?
Green:Ah, yes, sure did.
Eurocopter: Did you check for creep beyond 13mm on the number 2 and 3 TR bearings?
Green: Yes.
Eurocopter: Did you check for delamination of the Thomas Couplings?
Green: Didn't need to, the trailing edge split was only 15cm long. And it impacted 30cm inboard of the static tip.
Eurocopter: OK, you'll need a duplicate inspection, I'm afraid.
Green: Done that - it's my wife with approval number: $$4%66&.
Eurocopter: Send a picture?
Green: Can't - don't have a signal.
Eurocopter: Not to worry, do it when you get home.
Green: Cheers guys.

Like other posts have SHOWN and SAID (since your last post) RVDT - truth is stranger than fiction.

Now what was that bit about the sacrifical strip lifting?

Bull****: "You have control".
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Old 2nd Dec 2015, 21:07
  #104 (permalink)  
 
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Mr Green did not inform the factory of his bush repair until he was back in Sydney.
Since when is it a requirement to inform the manufacturer of a repair carried out in accordance with their and the aviation regulations requirements?

The only reason I can think to notify them may be to order a new set...

Unless you needed advice of course.
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Old 3rd Dec 2015, 09:40
  #105 (permalink)  
 
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TC,

WRL has posted a picture of the damage - apparently. Whether it is actually the blade damage in question?

If it in fact it IS a picture of the damage I am sure that under the present circumstances of an open accident investigation a visit from CASA and the AFP will be pending to establish whether it may or may not have been a contributing factor. Contributors to this forum are not that difficult to locate.

I have given Richard the benefit until proven otherwise.

It is a FACT that I do not KNOW what actually happened and neither do you.

Like other posts have SHOWN and SAID (since your last post) RVDT - truth is stranger than fiction.
Hahaha - everything on here is fiction (bull$hit) - just the depth varies.
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Old 5th Dec 2015, 00:43
  #106 (permalink)  
 
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Originally Posted by What Red Line?
RVDT wrote "a PU tape maybe lifted or split after a minor impact with something?

See for your self.


That is the trailing edge yes? I can imagine a delamination from a blade strike but how does one pull a chunk out of a trailing edge like that hitting something?
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Old 5th Dec 2015, 09:37
  #107 (permalink)  

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As there is no reference, link, other sized version or any other conversation to be found on t'internet about that photograph, that I can find anyway; to post it here giving the impression that it shows the previous damage to the 135 referred to in this thread with no other verifying information relating to it, is imho, out of order.

As it shows apparent impact damage to the trailing edge, it is dubious at best and for the moment must go into the 'deep bull****' tray.

'What red line', can you tell us where they photograph came from please?



"97% of all information found on the internet is a load of bollix"

US President, Abraham Lincoln
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Old 5th Dec 2015, 10:10
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That is the trailing edge yes? I can imagine a delamination from a blade strike but how does one pull a chunk out of a trailing edge like that hitting something?
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If the machine is descending and the blade has a high angle of attack, the trailing edge can be exposed in this way.
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Old 5th Dec 2015, 10:41
  #109 (permalink)  

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Chopjock
If the machine is descending and the blade has a high angle of attack, the trailing edge can be exposed in this way.
Can't quite picture this chop jock;
The angle of attack is an aerodynamic angle, and you say "if the machine is descending", please could you post the vector diagram that you're looking at as I can't see how the trailing blade becomes more exposed in this scenario.
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Old 5th Dec 2015, 11:11
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please could you post the vector diagram
I don't have a vector diagram, but if you imagine a high pitch angle on the blade with no airspeed and a settling with power scenario (over pitching), the trailing edge would be lower than the leading edge and thus more exposed to first strike whilst descending to land for example from the hover.

Last edited by chopjock; 5th Dec 2015 at 11:25.
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Old 5th Dec 2015, 12:34
  #111 (permalink)  

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I don't have a vector diagram, but if you imagine a high pitch angle on the blade with no airspeed and a settling with power scenario (over pitching), the trailing edge would be lower than the leading edge and thus more exposed to first strike whilst descending to land for example from the hover.
Oh, you're talking about pitch now!

So, from the hover, in the descent to land, in a settling with power (over pitching) scenario

I guess stranger things happen at sea
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Old 5th Dec 2015, 12:48
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Min pitch on most helicopters is a plus figure e.g BO 105 +4 degrees.

So I believe that in a hover descent the trailing edge would be the lowest point.
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Old 5th Dec 2015, 13:26
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Oh, you're talking about pitch now!
I was talking about the angle of attack of the blade, as per the photo of the damage to the trailing edge of a blade.(Which allegedly was damaged whilst landing in rough terrain?)
What angle of attack did you think I was talking about??
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Old 5th Dec 2015, 13:56
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You've just raised that 'bollix' figure to 98% chopjock - talk about lurid imagination.
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Old 5th Dec 2015, 14:30
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You've just raised that 'bollix' figure to 98% chopjock - talk about lurid imagination.
How would you account for getting a dent in the trailing edge of a blade then?
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Old 5th Dec 2015, 15:40
  #116 (permalink)  
 
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The answer has to be "Abraham Lincoln" After all, we've just been told that he predicted the level of bul$$it on the Internet.
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Old 5th Dec 2015, 21:40
  #117 (permalink)  

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Chop jock,

We'll leave the angle of attack discussion, it's clearly pitched too high for you. (See what I did there!)

The photograph posted on this thread, which shows that trailing edge damage, more than probably has nothing whatsoever to do with this thread. Looking at the picture, the yellow colouring is very dull/matt, (could be dirty I suppose), it covers a larger area than the traditional 135 blade colour scheme and the curvature at the leading edge tip is a lot longer and not so curved as a traditional 135 blade;






Despite the leading edge damage being a red herring here, in answer to your question; "how would you account for getting a dent in the trailing edge of a blade then?;
May I suggest that the blade may be moving backwards before hitting something or maybe the stationary blade is hit by something else. Damage to blades doesn't have to occur when they are under power or even when they are rotating.


So, if we can stick to the facts of the matter;

"I had a minor blade strike on a tree branch in a wilderness area in Cape York. In order to get the helicopter out of that location, I made a repair to the rotor blades," he (Mr Green) wrote in the submission to the federal government's Aviation Safety Regulation Review.
Now, doesn't that sound as though the more 'traditional blade strike' type (minor) damage had occurred?
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Old 6th Dec 2015, 04:32
  #118 (permalink)  
 
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So in one word: This sensationalist picture of a blade damage of another helicopter of a different type altogether has zero relevance to this discussion.

SilsoeSid, nice picture of a H135 though! After all, it is possible to land on a dolly...
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Old 6th Dec 2015, 07:45
  #119 (permalink)  
 
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Yes, but that dolly is a bit better than the one form the other thread you are referring too, it is a bit bigger (as such the pilot can see the front of it almost) and it has those stability feet's.


cool EC135 picture (white on white)
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Old 6th Dec 2015, 08:34
  #120 (permalink)  
 
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SiloeSid.


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