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BHS - CHC in Brazil S92 recent event

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BHS - CHC in Brazil S92 recent event

Old 17th Apr 2017, 01:14
  #21 (permalink)  
 
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I would think that after the initial contact proper positioning on the circle was the least of their concerns :-)
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Old 17th Apr 2017, 01:39
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I was talking about BEFORE the excitement!

It was a good recovery AFTER the excitement!
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Old 17th Apr 2017, 02:00
  #23 (permalink)  
 
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excitement!
I bet it was that indeed!
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Old 17th Apr 2017, 04:32
  #24 (permalink)  
 
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When you stop the video at 0:09, there is no damage in the drive shaft area. So I suggest, that the tailboom blade strike occured during the hard landing. That would explain, why there was no spinning of the helicopter.

skadi
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Old 17th Apr 2017, 05:49
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Originally Posted by skadi View Post
When you stop the video at 0:09, there is no damage in the drive shaft area. So I suggest, that the tailboom blade strike occured during the hard landing. That would explain, why there was no spinning of the helicopter.

skadi
Well spotted!
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Old 17th Apr 2017, 06:32
  #26 (permalink)  
 
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The guy in front of the helicopter at the edge of the helideck also gave handsignals short prior TR contact, but then preferred to duck for cover...

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Old 17th Apr 2017, 07:21
  #27 (permalink)  
 
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MR Strike, TR Strike, Horizontal fails from TR vibration as it doesn't seem to have hit anything.

Heavy landing etc etc. Write off I would say.

Registration noted - PR-CHR - SN 920112.

Get out the barge pole.

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Old 17th Apr 2017, 07:41
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Originally Posted by RVDT View Post
MR Strike, TR Strike, Horizontal fails from TR vibration as it doesn't seem to have hit anything.
The stab failure is in direct line with the tail rotor: I'd suggest the debris in the video may be the tips of the TR flying off, and shredding the stab at the failure line.
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Old 17th Apr 2017, 07:42
  #29 (permalink)  
 
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At least two of the MR bladetips are looking undamaged, so i presume that there was no MR contact with the structure, just one or two blades flapped into the tailboom.

skadi
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Old 17th Apr 2017, 07:48
  #30 (permalink)  
 
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Question for those who regularly fly long distances offshore - when something like this happens how the hell are they going to fix it. Obviously have to get new blades out there and I doubt its a 5 min flight to where it is. Do you just strap some spare 92 blades to the side of another 92 ??
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Old 17th Apr 2017, 07:52
  #31 (permalink)  
 
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Originally Posted by John Eacott View Post
Well spotted!
The other clue is that the TR continues to rotate all the way through to shutdown.
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Old 17th Apr 2017, 07:53
  #32 (permalink)  
 
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Originally Posted by KiwiNedNZ View Post
Question for those who regularly fly long distances offshore - when something like this happens how the hell are they going to fix it. Obviously have to get new blades out there and I doubt its a 5 min flight to where it is. Do you just strap some spare 92 blades to the side of another 92 ??
Get it on a ship (having removed all blades - using the rig's crane) and sort it out once back onshore
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Old 17th Apr 2017, 07:55
  #33 (permalink)  
 
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I don't think that aircraft will be flying anywhere anytime soon. It will probably go home by boat.
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Old 17th Apr 2017, 07:58
  #34 (permalink)  
 
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Originally Posted by 212man View Post
The other clue is that the TR continues to rotate all the way through to shutdown.
...but changes the rotation at the end while MR is still turning slowly !

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Old 17th Apr 2017, 08:43
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Originally Posted by skadi View Post
...but changes the rotation at the end while MR is still turning slowly !

skadi
Good spot! I'd turned my attention away. Looks like the drive shaft must have finally disconnected in the last few moments because the TR is clearly being driven initially and is not slowing down on its own.
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Old 17th Apr 2017, 09:51
  #36 (permalink)  
 
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Originally Posted by albatross View Post
Interesting damage to the port side sponson float installation. Wonder what caused that.
Hit the deck hard with sideward movement.
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Old 17th Apr 2017, 10:10
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Originally Posted by albatross View Post
What seat would you use if you were planning to come to a hover on the port side and transition right onto the deck? Anyhoo the Capt usually sits in the RHS.
A more pertinent question might be why they chose that approach path.
Why would you come to a hover anyway except when already well within/over the aiming circle? I don't fly the S92, I fly something quite underpowered so we aim to fly Cat A to the deck. But not hitting solid objects takes preference over complying with the power requirements if we get it wrong.
With little or no wind we approach at as close to 90 degrees to the deck heading as we feel comfortable with. Either seat pilot is fully capable of landing the aircraft within limits. I'm very curious about the reasoning behind this approach.
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Old 17th Apr 2017, 10:21
  #38 (permalink)  
 
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[QUOTE=S76Heavy;9743102]Why would you come to a hover anyway except when already well within/over the aiming circle? I don't fly the S92, I fly something quite underpowered so we aim to fly Cat A to the deck. But not hitting solid objects takes preference over complying with the power requirements if we get it wrong.
With little or no wind we approach at as close to 90 degrees to the deck heading as we feel comfortable with. Either seat pilot is fully capable of landing the aircraft within limits. I'm very curious about the reasoning behind this approach.[/QUOTE

I just thought that must have been the plan as the aircraft appeared moving right into the camera frame.

We usually have the pilot with the best view of the helideck do the landing so in this case that would have been RHS.

I have no idea what the reasoning was in this case.
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Old 17th Apr 2017, 10:24
  #39 (permalink)  
 
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Originally Posted by 212man View Post
Good spot! I'd turned my attention away. Looks like the drive shaft must have finally disconnected in the last few moments because the TR is clearly being driven initially and is not slowing down on its own.
Look at 0:44, you can easily see the rotating end of the interrupted driveshaft. I am still convinced that the taildrive was interrupted when hitting the deck, not before !

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Old 17th Apr 2017, 10:24
  #40 (permalink)  
 
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Originally Posted by albatross View Post
We usually have the pilot with the best view of the helideck do the landing so in this case that would have been RHS.
I would hope that is industry standard. We do it in any case. But do you hover next to the deck or is it a continuous movement?
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