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Flt. Lt. Sean Cunningham inquest

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Flt. Lt. Sean Cunningham inquest

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Old 30th Jan 2014, 14:20
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5F6B

Doesn't matter where the seat pin is or isn't if the scissor shackle has been over tightened.
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Old 30th Jan 2014, 15:35
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Any ejection seat could be described as "entirely useless" if it hasn't been maintained or assembled correctly, to ensure that all aspects of its operation would be efficient and safe. This particular seat was, with hindsight, useless.

I'd be interested to know how many other Type 10 series seats were examined in the days after this accident and found to have the same fault with the Scissor Shackle unit.
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Old 30th Jan 2014, 15:41
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Anybody got an answer for RetiredBA/BY?
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Old 30th Jan 2014, 15:53
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I've got this 'orrible feeling I'm taking the attitude of the Mull of Kintyre Airships here.
No, as far as I can see you've done nothing that warrants imprisonment under the Air Force Act. They, however.......
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Old 30th Jan 2014, 16:38
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I don't think he branded the entire escape system was 'utterly useless', just the 'safety pin mechanism' - which has been shown (sometimes) not to render the system safe, even when fitted (albeit incorrectly).

However, the pin usefulness is a slight red herring as the pin would have been removed and stowed by that stage - as mentioned previously.

The significance of 'likely to mislead' is that anyone seeing the pin fitted (albeit incorrectly) would assume that the handle was fully in and therefore fairly safe. It has been shown that it can in fact be partially dislodged and in a fairly precarious condition.
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Old 30th Jan 2014, 16:43
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FWIW, I believe the seat would've worked in an in-flight ejection due to the stresses on the chute overcoming the pinching effect of the restraint that was over-tightened, so the escape mechanism wasn't entirely useless, only in this unfortunate situation of zero-zero

Did anyone state what the reason was for the seat firing? i.e. what triggered it?
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Old 30th Jan 2014, 16:46
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5F6B

Doesn't matter where the seat pin is or isn't if the scissor shackle has been over tightened.

That would depend entirely on altitude, if it ejected at height, wouldn't he still have manual separation to fall back on?
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Old 30th Jan 2014, 16:48
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To try and answer my own question, is this suggesting that the pilots straps had been passed through the firing handle, which could be the trigger for the seat to fire?

Sean Cunningham inquest: A catalogue of errors led to pilot's death, coroner concludes | Lincolnshire Echo

The court heard that Martin-Baker has been looking at some sort of shroud to prevent straps from being fed through the seat firing handle.

Read more: Sean Cunningham inquest: A catalogue of errors led to pilot's death, coroner concludes | Lincolnshire Echo
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Old 30th Jan 2014, 16:58
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I may well have missed it despite careful perusal of all the posts, but what DID initiate the seat firing ? I have not yet seen the SI report.
I don't think it was conclusively determined, with the handle already pulled out of the holder it could have been anything from simply knocking it with his leg to putting something in a pocket, and sadly the only person who could answer that question is no longer with us, maybe the service board of enquiry will elaborate on how much movement was required to initiate ejection when the seat handle was in the raised position.
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Old 30th Jan 2014, 17:02
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Nutloose,

Man sep does not bypass the scissor shackle.
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Old 30th Jan 2014, 17:09
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Background Noise beat me to it but this MB link tries to explain the sequence of events (man sep covered under 'Functions' and 'high speed/high altitude').
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Old 30th Jan 2014, 17:15
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So tell me this, do you think the Coroner and the RAF were aware that the Civil Aviation Authority issued an Emergency AD on this very problem for privately operated aircraft with Ejector Seats way back in

NOVEMBER 2011

http://www.caa.co.uk/docs/33/2011111...Superseded.pdf
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Old 30th Jan 2014, 17:19
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Check the date.
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Old 30th Jan 2014, 17:20
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Yes - but that was after this accident.
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Old 30th Jan 2014, 17:25
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No the 2013 one was an amendment, the 17 of November 2011 one I linked to shows they issued an AD to check the shackle has movement.
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Old 30th Jan 2014, 17:34
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Yes - but the accident was on 8 Nov 2011.
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Old 30th Jan 2014, 17:36
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As I recall, post this tragic incident, Martin Baker declared categorically that their seat was not to blame; which is obviously not the case in this incident. Notwithstanding the lives that have been saved using the various MB seats, this was a very bold statement, and having worked alongside some of their personnel, it is typical of the very arrogant stance they have taken with a number of projects!!

As has already been noted it is interesting that the MOD/RAF has already paid out, why hasn't MB been held accountable?

Just found the link, however, the connection has been removed! But it stated:

http://www.martin-baker.com/getdoc/6...-Releases.aspx

RAF Red Arrows Incident on 8th November 2011
On 8th November, there was a fatal accident involving the Red Arrows Hawk aircraft XX177 following the ejection of a Mk10B seat.

We have had the opportunity to examine the seat and, while not wishing to pre-empt the outcome of the investigation currently underway, are satisfied that neither a mechanical nor a design fault were to blame for the fatality.

We welcome the opportunity to assist the Lincolnshire Police and the Military Air Accident Investigation Board in identifying the causes of this tragic accident

Last edited by Could be the last?; 30th Jan 2014 at 17:48.
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Old 30th Jan 2014, 17:40
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Thanks background, sorry, I thought it was last year, thanks for clarifying the manual release also.

Could be last, denying liability is normal civilian wise as they can be held liable, a bit like when you have a car crash, you are not supposed to admit liability.
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Old 30th Jan 2014, 17:48
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Agreeing to settle?

By the time you've paid people to argue amongst the parties involved, it might just be cheaper and easier to settle. That way the settlement money goes to those who need it rather than those doing the arguing.

In this case, the operator surely had some involvement in the events that lead to the manufacturer's item not working as designed, so it would just be a very expensive and time-consuming argument to split the inevitable costs.

In the case of a car crash, the insurer doesn't want the insured to admit fault, so that they can run that discussion themselves.
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Old 30th Jan 2014, 18:15
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Chug
A new MOD tactic to settle before both inquest and SI publication? Now why would they do that I wonder?


I think you have that 100% arse about face. If the MoD have already admitted 100% liability, then the only direction this could have gone would have been against the family, that is, if the Coroner or SI mentions some degree of contributory negligence by Flt Lt Cunningham himself. It would be the family's lawyer who would advise them to accept.


5F6B
I agree with you entirely


Wrathmonk
Doesn't matter where the seat pin is or isn't if the scissor shackle has been over tightened.


If a member of the groundcrew had been the victim, he wouldn't have been strapped in and the scissor shackle would be irrelevant. And Flt Lt Cunningham might have been up for a Court Martial
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