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-   -   AW139 G-LBAL helicopter crash in Gillingham, Norfolk (https://www.pprune.org/rotorheads/535936-aw139-g-lbal-helicopter-crash-gillingham-norfolk.html)

jeepys 15th Mar 2014 15:01

Skin the cat - why?
 
So we are now talking about different methods of taking off from a private/confined site in sh**e weather breaking all the rules in the book. Yes you can engage hover (MUH 30ft?) then climb on the radalt to a good height say 500ft, then trans up to take you to 80kts and you are away, BUT this is not a war zone so do we really need to do it. No of course not. Just remember the old adage 'there are old pilots and bold pilots ......... There is a lot of truth in that.
I agree that we should not be talking about raising the limits either. Stick to the rules and you will be fine. If the limits get raised then you may as well fly by fixed wing.

Turkeyslapper 15th Mar 2014 15:17


So we are now talking about different methods of taking off from a private/confined site in sh**e weather breaking all the rules in the book
No, I was was giving a practical example to a question.....in addition, not that I am suggesting that it is wise to takeoff into fog from a private helipad and I am not sure what the rules are in the UK however, they are not the same all over the world either (can you even use goggles for scene landings there yet :8).

Either way, a tragedy and RIP.

Cheers

ShyTorque 15th Mar 2014 15:44


So we are now talking about different methods of taking off from a private/confined site in sh**e weather breaking all the rules in the book.
What rules do you suppose were broken in this case, bearing in mind this was not an AOC flight, and what evidence have you of that?

jeepys 15th Mar 2014 15:52

Shy,

the rules in your own book. We all have limitations that when broken can result in a learning process which in turn may expand those limits or in some cases may result in something far worse and unrecoverable. Note, I have not said this is what may have happened in this case.

FSXPilot 15th Mar 2014 15:56

I feel very sorry for the two pilots and the other passenger. The owner reaped what he sowed with his attitude to his flying staff.

ShyTorque 15th Mar 2014 16:01


Shy, the rules in your own book.
What book is that?

101BOY 15th Mar 2014 16:06

With you on that FSX.

There was no HOV mode or TU on this heli - I think that's only enabled on the SAR ac even though the buttons are installed. GA would only work above 60kts, but would give you a wings level climb at 1000' per min and accel to 80kts off top of head.

Ref rules Shytorque, by the sound of the metars and anecdotal eye witness reports then the VFR vis limits for a start AOC or none.

tottigol 15th Mar 2014 16:10

Whatever the cause, the AW139 is equipped with a FDR and a CVR and it's quite possible the pilots' own records are retrievable by the authorties. Let's give time and investigative teams a chance.
Like someone before posted, there are many ways to skin a cat, but only one way to do it BY THE BOOK.

SASless 15th Mar 2014 16:45

Zero/Zero Takeoffs are not that difficult.....perhaps Illegal....but as a practical exercise is quite a normal training task.....once done in single engined, non-Stabilzed helicopters by Student Pilots.

Now we get into convoluted esoteric arguments about capabilities of Avionics Systems.

Until the AAIB releases, at least a basic summary of what happened, anything being discussed so far is pure speculation.

Bravo73 15th Mar 2014 17:31


Originally Posted by 101BOY (Post 8378392)
GA would only work above 60kts

Judging by the engine cowlings, this would likely to have been a Phase 7 aircraft. So, FWIW, that figure would be 41kts. And, IIRC, HOV and TU modes are included as 'standard' in Phase 7.

That's not to say, however, that you would necessarily want to be using any of those modes in this scenario.

SASless 15th Mar 2014 17:48


Originally Posted by DAPT
One of the problems encountered in AW139 training is so much time is focused on automation management it does not leave much time for basic hands on IFR flying.
In this case I agree with SAS that ITOs can be conducted safely in a unstabilized UH1 if trained and proficient to get above a fog layer to clear above or continue IFR if necessary, You can also attain proficiency in O/O autorotations in simulator.

Zero/Zero Autorotations in a Sim.......and how does that work in real life?

jeepys 15th Mar 2014 17:49

You are right, zero zero takeoffs are not that difficult once practiced and current (especially in such a capable aircraft) but if you make a habit of doing such maneouveres you stand a good chance of getting caught out one day.

The question is WHY? Why would you do such a take off in poor conditions. We all know the answers as to why and listening to pricks like the bloke on the Jeremy Vine show it's surprising these accidents are not more common.

Shy. Would you complete a take off at night in thick fog from a private site without being shot at?

Art of flight 15th Mar 2014 17:50

Compared to the gazelle in which we used to practise zero/zero take-offs (under the hood) the UH1 IS stabilised! Not that I'd like to try it at night from a confined area surrounded by trees that can't be seen.

SASless 15th Mar 2014 17:51


Shy. Would you complete a take off at night in thick fog from a private site without being shot at?
Perhaps if the Farmer's Daughter's Father arrived home early....and he had a Shotgun handy and one did too thorough a Run Up Checklist!:ok:

Art of flight 15th Mar 2014 17:54

I could see how fog might be an advantage then.

HLCPTR 15th Mar 2014 19:51


Judging by the engine cowlings, this would likely to have been a Phase 7 aircraft.
What is it about the engine cowlings that indicates Phase 7 software?

Does anyone have the serial number of this aircraft?

ShyTorque 15th Mar 2014 19:55


Shy. Would you complete a take off at night in thick fog from a private site without being shot at?
No I wouldn't. But what do you know about the exact prevailing visibility conditions at this private site?

And what do we know about the requirements for visibility for a private flight operating from a private HLS?

Any differences for a flight which could be planned to climb and use IFR en route?

And while we're on the subject of "breaking all the rules in the book", I ask again what book are we talking about and what differences are there in weather requirements for AOC/PT and privately operated, non AOC flights?

ShyTorque 15th Mar 2014 20:08


So why not just regulate to say that all sites requiring night take offs are recce'd and published in official aviation literature. It would go some way to protecting pilots against pressure from clients
High Spirits, would you be happy about the details of your private home being listed in a public aviation document?

By the same principle, why not ban all car journeys from unlisted private addresses? After all, there are far more car accidents.

Why not go the whole hog, ban all helicopter flights from other than airfields? Then use a fixed wing followed by a long drive to get to your destination. That would do the industry loads of good... :ugh:

SilsoeSid 15th Mar 2014 20:11


HLCPTR;
Does anyone have the serial number of this aircraft?
31421
GINFO
:ok:

jeepys 15th Mar 2014 20:20

Shy,

I was simply asking you a question which you have assumed was directed at this incident.

I am guessing that your thoughts as to the cause of the accident are not weather related?

Bravo73 15th Mar 2014 20:22


Originally Posted by HLCPTR (Post 8378908)
What is it about the engine cowlings that indicates Phase 7 software?

This aircraft has got the newer style engine cowlings (less exhaust exposed). Every aircraft that I have seen with the newer cowlings also has the Phase 7 software.

(Although my sample size is relatively small so I obviously stand to be corrected on that detail).

jeepys 15th Mar 2014 20:24

What is it about the engine cowlings that indicates Phase 7 software?

The cowlings on the latest machines are more sculpted and the exhausts are shorter. Whether this has a direct relationship to phase 7 I am unsure.

HLCPTR 15th Mar 2014 21:04


This aircraft has got the newer style engine cowlings (less exhaust exposed). Every aircraft that I have seen with the newer cowlings also has the Phase 7 software.
I am confident it is just coincidence. One is not related to the other. Logically, however, a newer airframe is more likely to have been ordered and delivered with Phase 7 (which is still optional as far as I know).

Bravo73 15th Mar 2014 21:17


Originally Posted by HLCPTR (Post 8379099)
Logically, however, a newer airframe is more likely to have been ordered and delivered with Phase 7.

Exactly my point. :rolleyes:

Tandemrotor 15th Mar 2014 21:31

Jeepys

Shytorque makes a very good point regarding private flying versus public transport. I was flying police helicopters before the advent of the PAOC. At that time it was simply private flying with one or two exemptions from Rule 5 low flying restrictions. You'd probably be very surprised at how unrestricted it is. Purely as a random example, I recall my record was 27 consecutive days 'on duty'!

I can well see the appeal of the almost totally unrestricted nature of private flying, (I don't know if this was?) rather than PT, to the very wealthy!

SilsoeSid 15th Mar 2014 21:50

BBC News - Norfolk crash helicopter's flight recorder recovered

I'm surprised how far the crash site is from the grounds of the hall, which I presume was the take off point :confused:

http://i52.photobucket.com/albums/g1...psa891dafd.jpg

http://i52.photobucket.com/albums/g1...ps307ccef2.jpg

malabo 15th Mar 2014 22:08

The Anglia video shows a better perspective than the photo. There was a report they whacked a tree branch on the way out, but hard to say it that made any difference. They would have been going at a pretty good clip at impact to shred the fuselage like that.

Lots of chest-beating "I would never do that", even by offshore pilots that do exactly that on those dark misty nights coming off a deck pointed at ink. You follow a disciplined profile and it works. Every time.

Hard to imagine being able to keep a 139 anywhere near the ground, but who knows what their takeoff plan was. We'll know soon enough.

jeepys 15th Mar 2014 22:46

Tandemrotor,

I fully understand what Shy is talking about as I have operated in a similar situation, however, irrespective of how relaxed the private rules are does one not have their own limits to work within?

What I am getting at is even if the rules say you can't do something like take off in poor weather from a private site that does not mean to say it's okay to do it.
As pilots we all have a duty of care for our crew and passengers, don't we?
Many of us have been in similar situations where we know what we are just about to do could be bending the rules or dodgy in some respect but we then look at the safety aspect from a self preservation point of view, throw in a few other factors and then make a calculated decision taking limitations of the aircraft and crew into account.

Forget the rules just for a minute but can we agree that it's safe and sensible should you be operating VFR to be in sight of the surface (at take off or landing) or if operating IFR then at least remain visual until you have min IF speed.

Before anyone shoots me down this is just a question that may have no bearing on this incident.

One more thing before I get my coat but are there many pilots out there who regularly practice taking off from private sites at night in poor vis weather? In the real aircraft and not the sim.

BigAl94 15th Mar 2014 23:03

Removed due to error

Agaricus bisporus 15th Mar 2014 23:33

OK, here's my input.

(3500hrs helo, 1000N Sea. 12000hrs airline. I'm no expert. but equally no dummy)

I have not had time to read anything on this forum about this accident. I was away from home and the interntet when it occurred until now.

I was staying about a mile from the scene.

On Thursday afternoon I was at my place rather less than a mile from the accident site burning a bonfire at 1700 when I noticed an AW139 passing to the North of me, from W to E. I recognised it as an AW139 and it was clearly slowing and descending towards a landing, helos land at the hall regularly.
I mentioned to my oppo that I thought that they were probably returning from Cheltenham, even though it seemed rather early.

As a helo Professional I listened to the sound as the aircraft disappeared from sight and gained the impression - and here I must stress that what follows is no more than my impression - that the helo slowed and made various manoeuvres for an approach and landed. I then heard - I am quite certain, about three minutes of constant burning and turning, than an increase of noise as it took off again. I thought at the time that the noise then disappeared rather quickly but that is nothing to cause alert at the time.

Note that my sighting of the 139 was at 1700 with the helo travelling W to E to the N of me in perfect vis at my guess and clearly slowing. I soon lost visual but retained audible evidence which suggested an uneventful landing, Wind was Easterly at 3-5 kts, very light.

After c. three minutes burning and turning (as you might expect for a charter stop) I'm pretty certain I heard the helo lift and depart. I wonder if I did in fact? Refuel?

At 1840 I went out for supper and remarked to my oppo that Beccles (some 2 miles distant) had disappeared in the haze, and later on the drive it was clear that it was becoming misty and that fog was forming early. I thought it would be thick. Returning from the pub at 2100 (yes, sad, I know) the fog was very thick indeed. Streetlights in Bungay only visible as you passed the previous one, so 30yards or so to see streetlights. In the Waveny valley 20mph was the max on the lanes. Vis at my place less than a mile from the accident site was the same. The fog was not patchy (8 mile drive) and my place is c. 30 ft above sea level and Gillingham Hall perhaps 20-30ft higher.

As I got out of the car I was immediately aware of at least two helos flying low and slow above and manoeuvering with a lot of blade slap. There was a full moon but it was only intermittently visible as a faint disk. I guess now they were ENG but there's no way they could have seen anything.

Hummingfrog 15th Mar 2014 23:33

bering


Not in 50 metres visibilty they don't. That's well below any current north sea company take-off minima.
But we do if you think about it. On a dark night pointing away from any rig structure in your peripheral vision and no other boat/rig ahead of you what do you think your visibility is? You are doing a full instrument takeoff. The only advantage you have is there are no obstructions directly ahead of you.

HF

Tandemrotor 15th Mar 2014 23:45

Jeepys

Don't get me wrong. I do agree with what you have just written. I also confess I haven't flown corporate, not least because I may be more cautious than many, and therefore always accepted that my employment in that sector could have been short lived! There must be huge pressures to get the job done. I don't envy those guys.

I have always looked on things such as this as a kind of flow diagram. In order of priority: First might an act or omission cost me my life? Second might it cost me my liberty? Third might it cost me my licence. Fourth might it cost me my employment?

Very easy to run through in the comfort of our own home. Far more difficult when operating in that sector.

I assume the vast majority of helicopter pilots will be ex-mil of one shade or another? I know for a fact in the military world, I will have carried out a 'towering take off' in limited visibility in order to get airborne from a deployed site in shallow fog. Performance A, certainly in my time in the mil, was very much secondary. It worked, (risky shift??) so I can see the temptation to try it in a civvy helicopter if under pressure, and if it weren't ruled out by nature of the category of operation in which I was flying?

But by the look of the pictures provided by SS, this may well have been an a/c unserviceability rather than simply restricted visibility? We don't yet know.

SASless 15th Mar 2014 23:48

We have had the discussion about Weather Minimums and actual Visibility where there is nothing to look at such as Offshore and no surface lighting (boats, rigs, platforms, Gas Flares) and have to recall the Rule does not necessarily comport with reality when we use "visibility" as part of our Go/No Go decisions. If there is nothing to be seen.....but you have the required visibility...by Rule you are legal but in reality you are IMC despite the Weather being VMC.

It gets rather Dark offshore most nights....especially with an overcast and no celestial lighting....but hey....you are VMC....right? If VMC....why do we have to fly by sole reference to Instruments? Should we not be able to control the aircraft by outside visual reference if we are really VMC?

In the USA....under Part 135 (Air Taxi) surface light reference is required for Night VFR.....but under Part 91 (Non-Commerical Flight)....there is no requirement for Surface Light Reference. Go Figure?

Bravo73 15th Mar 2014 23:57


Originally Posted by Agaricus bisporus (Post 8379461)
OK, here's my input

I'm sure that you've already considered it but it might be worth contacting the AAIB with your account.

ShyTorque 16th Mar 2014 00:14


Shy,
I was simply asking you a question which you have assumed was directed at this incident.

I am guessing that your thoughts as to the cause of the accident are not weather related?
So it was a random question that you just coincidentally posted on this thread? I see.

At this stage I don't know the cause of the accident. I have my own thoughts and could speculate in public as well as any one else here, especially as I'm in exactly the same line of business as these unfortunate pilots. I spoke to Carl and Lee briefly in the vicinity of this exact airframe just a few days before the accident. I had no direct affiliation to either, by the way, except as professional acquaintances.

But I won't speculate here. I certainly don't like to see others thoughtlessly slagging off deceased pilots, especially even before an interim report is published.

There is absolutely no doubt that the press commonly use this forum for their own ends. I declined a direct request to make contact with a member of the BBC media about this accident shortly after it occurred.

Regarding my own theory, we don't know exactly what visibility the crew found themselves faced with. Fog is notorious for forming in random patches and layers, especially at night. It's quite possible the area they took off from was in reasonable visibility at ground level, but with fog not far above.

There are other reasons why a helicopter might hit the ground shortly after takeoff, even a fully IFR equipped one.

Posting inflammatory expressions about "breaking every rule in the book" etc is highly distasteful, especially as it appears that the bereaved widow of one of the pilots has already made contact here. I know from experience that even dedicated rule followers (and this thread obviously has more than a few self righteous ones) sometimes get caught out and pay the ultimate price.

Discussion of the landing approach capability of this individual airframe seems very strange to me, as the accident occurred during the takeoff phase.

High Spirits,

We are already one of the most highly regulated professions in the world. Let's not go begging for more of it. If you look back at the recent RW accidents which have been discussed in great depth on this forum, I'd make the observation that following the existing regulations, coupled with common sense, might have made all the difference in a high proportion of them.

How you think that publishing details of private landing sites in some book or other would make any difference to safety on takeoff is beyond me. These pilots were the aircraft owner's personal pilots. They would have been aware of the details of the landing site because it was their regular one, the owner's house.

To say that I seem to care more about the industry than aircrew lives is highly offensive. My neck has been directly on the chopping block in aviation for over three and a half decades. During that time I've lost count of the friends and colleagues who have perished in aviation accidents. It's certainly more than two dozen. I've had direct dealings with the dependents of some of them and certainly attended far too many funerals for my liking. My personal priority is to keep my own backside perfectly intact. By doing so, those in the airborne armchairs behind me will stay safe, too.

What-ho Squiffy! 16th Mar 2014 00:31

Helo Regs
 
Helicopters are able to take off and land almost anywhere. However, it would be very easy to regulate them out of existence for all but government authorities and O&G. Tough enough regs will prevent ALL private helo accidents.

Surely a private operation should be allowed to operate from a private property without regulator surveys being required.

Regs are for the blind obedience of fools and the guidance of wise men. If it is found that this accident happened in conditions below minima, then the law will have its say. If not, it may end up CFIT for no reason other than human error.

SASless 16th Mar 2014 00:33


My personal priority is to keep my own backside perfectly intact. By doing so, those in the airborne armchairs behind me will stay safe, too.
Amen Brother!:ok:

It does not matter a whit to me what the Bloke in the big padded chair thinks when it comes to that decision as he is second in priority after my own precious Tush!

terminus mos 16th Mar 2014 01:07

There seems to be plenty of land around the hall to make a clear area long enough to allow a take off and approach strip.

The crews could have worked out a repeatable procedure, day or night with some defined "gates" to ensure clearance and performance during take off and landing.

While not condoning, if true, a departure in low vis, at least they may all still be alive to tell the tale.

jimf671 16th Mar 2014 01:56


Originally Posted by What-ho Squiffy! (Post 8379587)
... Surely a private operation should be allowed to operate from a private property without regulator surveys being required. ...

One would think so.

However, considering TM's point about the land around the Hall, perhaps common sense has not prevailed regarding obstruction at a location said to be regularly used by a helicopter.


(Which reminds me. There is a hazel tree I need to cut down.)

hillberg 16th Mar 2014 02:31

What gets me is the lack of damage to the tail rotor, A main rotor hub showing powered operation & sudden stopage. And the hay bails that it ran through,sad indeed.


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