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2007 Puma Crash, Enquiry and Inquest (Merged)

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2007 Puma Crash, Enquiry and Inquest (Merged)

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Old 8th Oct 2009, 05:49
  #201 (permalink)  
 
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...it may be that Nr droop and/or the lack of anticipators may be involved (or contributed in some way), as mentioned by others. If so, then it will not have escaped the notice of the AAIB/RNFSAIC that these problems have been raised, time and time again after past Puma accidents but yet nothing has been done to fix the problem; maybe the Puma MLU and engine upgrade is long, long overdue?
When I first had the pleasure of flyimg the Puma in the early 90s we were taught about it's few vices including the lack of anticipators. Fortunately the OCU staff and the 33 Sqn trg regime made the need to 'anticpate' possible Nr droop during any manouvring a priority, and so we effectively did exactly what the anticpator would do - albeit via a tweak on the collective rather than directly increasing the Ng. I'm not saying I didn't ever hear the odd 'beep', but you always new it was coming 'cos you'd not anticpated quite enough.

Now, I can't recall many (any!) Puma accidents prior to 94 where this lack of anticpation was an issue - but stand to be corrected. I do know this theme has been a feature in many accidents since, so can't help conclude that it possibly points to a lack of this 'anticpator' awareness. There are many old aircraft still out there with similar issues which, if handled correctly and flown sensibly, should remain safe. I know many fixed-wing aircraft have a minimum power setting on finals so the engine(s), albeit producing a bit more residual thrust, are ready and waiting to provide power at short notice. I do hope that the level of Nr awareness including on-sqn trg is as good as it was in my day when it helped me, my crew and passngers stay safe.
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Old 8th Oct 2009, 06:43
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H Peacock

I left the Puma force in 97 and know of at least two fatal accidents directly attributable to the lack of anticipators prior to 94. There were a number of incidents that involved minor damage (certainly to pride) not least a certain display at a Shawbury graduation in 88 when all the ex-Puma instructors were seen heading for the door as the alternators tripped offline and that tell tale shudder as the autopilot dropped out!
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Old 8th Oct 2009, 07:29
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directly attributable
'Contributable factor' surely

(with respect from an outsider)

If you know of the design flaw and are trained accordingly
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Old 8th Oct 2009, 08:46
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...not least a certain display at a Shawbury graduation in 88 when all the ex-Puma instructors were seen heading for the door as the alternators tripped offline and that tell tale shudder as the autopilot dropped out!
I didn't see it, but heard about it. But then this was one of the QHIs who taught me and others, on the OCU and then the Sqn, how best to avoid this 'lack of anticipation' in the first place.
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Old 8th Oct 2009, 08:51
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Shawbury display. Bet he didn't have 12 blokes down the back, and that he was authorised for the display flight.

CG
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Old 8th Oct 2009, 08:53
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Don't get me wrong, the guy flying was one of the most talented, competent and generally decent blokes I ever served with. It just proves that the beast could catch anyone - it was just a matter of degrees (no pun intended).
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Old 8th Oct 2009, 10:53
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Re: "Sloppy Unit"

It would be a shame if the actions of one crew, on one day, were to marr the reputation of an entire squadron, let alone of a whole force.

I would hope that a more balanced view will prevail, that the 'sloppy unit' slur will be quickly forgotten, and that the 'Loyalty', professionalism and flair that the heirs of Pattle's boys have always shown will once again be properly recognised.

This is a Force that has faced and mastered the demands of "unprecedented operational commitment", and its chaps deserve congratulation for having done so, and 33 have always been at the fore. You'd need to 'Search Far' to find their like....
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Old 8th Oct 2009, 11:22
  #208 (permalink)  
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Coroner now rowing back on the "sloppy" remark:

BBC NEWS | UK | England | North Yorkshire | Coroner sorry for 'sloppy' remark
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Old 8th Oct 2009, 12:58
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flipster

What you say is true to some extent in respect of RAF Accidents in Categories 3-5 or involving Fatalities; Categories 1&2 would normally be a Unit Inquiry. Any Investigating Officer or Board President will however have access through the Chain of Command, via the Flight Safety Staff, to whatever assistance is deemed necessary by the Convening Officer to fulfill the requirements of the Terms of Reference for the Inquiry. To put that in plain English - it means that the BOI are not guaranteed a week in a Hotel in DisneyWorld just because the last refuelling stop prior to the Accident was in Florida.

PS Thanks for the query - taking it a day at a time.

Last edited by cazatou; 8th Oct 2009 at 19:14.
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Old 8th Oct 2009, 13:07
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jackonicko

"Kita Chari Jauh" indeed!
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Old 8th Oct 2009, 13:11
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Yes but that is 230 Sqn! What I think Jacko should have been using was 'Loyalty'.
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Old 8th Oct 2009, 13:20
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Roger

Yes, I know that is 230 - that's the whole point!
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Old 8th Oct 2009, 13:23
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Oldbeefer

I know you know that I know you know it is 230. The smileys are aimed at Jacko Sir.
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Old 8th Oct 2009, 14:24
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okaydokay!
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Old 8th Oct 2009, 16:07
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Jayteeto

You'd know better than me, being a QFI, but the retreating blade stall sound is a dagga dagga dagga when you are low, fast and going round a corner a bit sharp. You fix it by dropping a bit of collective, or you end up rolling nose down heading in the direction of travel of the blade. At least thats what I was told 30 odd years ago, and as I've said I'm always prepared to be wrong.
Nr Droop, as you haven't got anticipators on the Puma- very likely, but I have never heard it, so I wouldnt know, Ive always flown Gnome.
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Old 8th Oct 2009, 19:32
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Nr Droop, as you haven't got anticipators on the Puma- very likely, but I have never heard it
I have; at MAUW (12+12+crew/NI) in a descending right hand turn on approach and therefore already close to the ground. I would not like to hear it again; it is a surreal sound and thankfully the chap with the lever in his hand left it alone which is against human instincts. He being a first tourist would suggest that either the training is/was effective or he simply froze. I like to think the former. I hasten to add that even if this approach had gone horribly wrong, I do not believe that there was anywhere near the momentum to destroy the airframe in the manner of the accident in question.

In follow-up discussion*, the 'system' (Sqn Execs & Trainers) was an advocate of anticipaters being in the head of the pilot in command, despite 38years of associated accidents. Duty of care legislation these days means that those nonchallent responses are a thing of the past.

*The situation was openly discussed to all Sqn members, and rightfully so.
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Old 8th Oct 2009, 19:44
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Rogersofarover,

Read my post again:

"I would hope that a more balanced view will prevail, that the 'sloppy unit' slur will be quickly forgotten, and that the 'Loyalty', professionalism and flair that the heirs of Pattle's boys have always shown will once again be properly recognised.

This is a Force that has faced and mastered the demands of "unprecedented operational commitment", and its chaps deserve congratulation for having done so, and 33 have always been at the fore. You'd need to 'Search Far' to find their like...."


I even used a winking smiley to make my respect for BOTH Puma mobs clear.
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Old 8th Oct 2009, 20:20
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'Mr Fell said his comments were aimed at the leadership at RAF Benson in Oxfordshire and not the rank and file.

He said he did not "resile" from his remarks but "apologised unreservedly" if they had been misconstrued.'

Mr Fell should remember that 'leadership' does not stop at Benson's main gate!
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Old 8th Oct 2009, 20:30
  #219 (permalink)  
 
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Caz,

You are right but as this ac was Cat 5 with fatalities, I would have thought that the AAIB would have been invited (under the MoU) to 'participate' because I presume the RNFSAIC are being kept quite busy out of area (not that the RAF has any expert accident investigators on which to call anyway!). Nonetheless, as long as either the AAIB or the RNFSAIC have done both the tech side and the ops side, that is a good start - this would be a whole lot better than a BoI/SI anyway....the way ahead perhaps?!

Now, if the ops report (met, supervision, human factors etc) has yet to be completed, then this is a different matter entirely. I can't see how the Coroner can proceed without this information, which could only be properly carried out by a professsional accident investigation unit such as the AAIB or RNFSAIC. I would think someone could confirm this, one way or another?

Wrathmonk - sorry! Yes, indeed those reports will not be open source for some time! If, however, they are in existence, one presumes the authors will called by the Coroner very soon and then we will see what follows on from there. As I am sure you appreciate, there could be a number of possibilities.

Sadly, it is highly likely that the gutter press will focus on the sensational aspects and miss the true gist of what the coroner is seeking to ascertain. I fear this Inquest will be very difficult for the all concerned. Let's hope the quality journos report the important facts and that the outcome really does help 'prevent recurrence'.

Jacko - I agree; let's not taint the whole fleet (and their supervisors) just yet.

flipster
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Old 9th Oct 2009, 04:46
  #220 (permalink)  
 
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You'd know better than me, being a QFI, but the retreating blade stall sound is a dagga dagga dagga when you are low, fast and going round a corner a bit sharp. You fix it by dropping a bit of collective, or you end up rolling nose down heading in the direction of travel of the blade. At least thats what I was told 30 odd years ago, and as I've said I'm always prepared to be wrong.
Retreating blade stall will invariably lead to an initial pitch-up, not pitch-down. You are correct about needing to gently reduce the collective. If the pitch-up and/or reduced collective does not 'unstall' the retreating blade (reducing AoA), the helicopter will try to roll towards the retreating blade, ie for the Puma a roll to the right.
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