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#71
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Winch Signals
On 16 Apr, 13:30, John Roche-Kelly
wrote: Once again there is the BGA way and there is Don's way! The BGA recommendations are distilled wisdom and best practice. And we peasants mustn't forget that, eh? There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? Was that not distilled wisdom and best practice? And if that was wrong, how can we be sure that the current method is right? It allows for common methodologies and a lack of misunderstanding. We have already established that four different winch signalling methods are currently used. That does not seem to cause any significant problems. Ian |
#72
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Winch Signals
On Apr 16, 10:43*pm, The Real Doctor
wrote: On 16 Apr, 07:15, Derek Copeland wrote: Anyway, who's to say that the hand is on the release knob? When fingers were waved, you knew that a hand was available for release .... or for the airbrake, by mistake in the heat of the moment. Don't forget that the "best practice" has to take into account inexperienced pilots and/or pilots that fly multiple different types in quick succession. As you note elsewhere, no system will, on its own, keep people safe. It is case of which set of practices is least bad across a wide range of circumstances. OT: I remember people seriously arguing that seat belts shouldn't be compulsory because they would cause some people to drown, if their car went into a river! |
#73
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Winch Signals
On Apr 16, 10:50*pm, The Real Doctor
wrote: There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? If new evidence is presented, I am prepared to change my mind. Would you refuse to change your mind? Was that not distilled wisdom and best practice? And if that was wrong, how can we be sure that the current method is right? I very much doubt it is "right" in all circumstances But that's not the point. |
#74
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Winch Signals
At 08:45 17 April 2009, Tom Gardner wrote:
On Apr 16, 10:50=A0pm, The Real Doctor wrote: There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? If new evidence is presented, I am prepared to change my mind. Would you refuse to change your mind? Was that not distilled wisdom and best practice? And if that was wrong, how can we be sure that the current method is right? I very much doubt it is "right" in all circumstances But that's not the point. I think the evidence exists to show that neither system is unsafe and that the solution dictated (launch marshalls) did nothing to improve matters. I agree there was/is a problem with people releasing early enough when there is a winch launch problem, and to a lesser extent aerotwow. I suggest that the problem is not one of procedure but of training and awareness. How often do we see a wing touch the ground and the launch continue and become normal. Everyone heaves a sigh of relief and goes back to what they are doing. The accident didn't happen, but if it had, the cause would be nothing to do with were the pilot happened to have his hand, but with his possibly TIBBIN state. The introduction of launch marshalls was never ever going to solve the real problem, in fact it could only make it worse, and we lost out again by circumventing a percieved problem instead of tackling the real one. The main objection to the launch marshall system is that it introduced to UK gliding one of the most dangerous practices known, that of negative consent. Something will happen as the result of third party action unless first party action is taken to stop it. One can only wonder at the towering intellect and distilled wisdom that considered introducing negative consent to a safety critical procedure. The statistics are now showing that we did not solve the original problem at all, just masked it and yet we fail to learn. There are no easy solutions, knee jerk reactions seldom work. To solve problems you first have to identify the problem, then find a solution that is not worse than the problem we already have. In this case the solution was in my view. 1. More effective education and instruction of the dangers of failing to make an early release. Ensuring that pilots were thinking about what they were doing. (Prior to the change the hand had to be near the release when not actually signalling, you had to think what you we doing, now you don't, as long as your hand is on the release you are safe, Yeah right!!!!!!!) 2. Moving the position of the release to ensure that it is close to hand and not hidden away in the dark recesses of the cockpit. (This was mandated for tugs following the fatal tug accident at Aboyne) Apart from the faulty processess in problem solving my main concern remains, NEGATIVE CONSENT has no place in a launch procedure. |
#75
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Winch Signals
Personally, I think the idea that accepting the cable to be hooked on means
that you have completed your preflight checks and are ready to launch, and then the launch is initiated by the launch marshall when he has checked that it is safe to do so, is a good one! It leaves the pilot free to concentrate on flying the launch, and with his left hand on the release knob, ready to pull off in the event of a wing drop or other emergency. Before this change in the rules, I often found that students, in attempting to release the cable in a hurry, made a grab for the canopy catch, the airbrake lever, the flap lever or the the undercarriage lever. None of these would exactly help in a difficult situation!!! The only possible downside I can see is the infinitely small probability of the pilot dying or passing out in the few seconds between hooking the cable on and starting the signalling. Over the years we have many more serious groundloop and cartwheel accidents than those caused by launching unconcious or dead pilots! Derek Copeland At 11:15 17 April 2009, Don Johnstone wrote: At 08:45 17 April 2009, Tom Gardner wrote: On Apr 16, 10:50=A0pm, The Real Doctor wrote: There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? If new evidence is presented, I am prepared to change my mind. Would you refuse to change your mind? Was that not distilled wisdom and best practice? And if that was wrong, how can we be sure that the current method is right? I very much doubt it is "right" in all circumstances But that's not the point. I think the evidence exists to show that neither system is unsafe and that the solution dictated (launch marshalls) did nothing to improve matters. I agree there was/is a problem with people releasing early enough when there is a winch launch problem, and to a lesser extent aerotwow. I suggest that the problem is not one of procedure but of training and awareness. How often do we see a wing touch the ground and the launch continue and become normal. Everyone heaves a sigh of relief and goes back to what they are doing. The accident didn't happen, but if it had, the cause would be nothing to do with were the pilot happened to have his hand, but with his possibly TIBBIN state. The introduction of launch marshalls was never ever going to solve the real problem, in fact it could only make it worse, and we lost out again by circumventing a percieved problem instead of tackling the real one. The main objection to the launch marshall system is that it introduced to UK gliding one of the most dangerous practices known, that of negative consent. Something will happen as the result of third party action unless first party action is taken to stop it. One can only wonder at the towering intellect and distilled wisdom that considered introducing negative consent to a safety critical procedure. The statistics are now showing that we did not solve the original problem at all, just masked it and yet we fail to learn. There are no easy solutions, knee jerk reactions seldom work. To solve problems you first have to identify the problem, then find a solution that is not worse than the problem we already have. In this case the solution was in my view. 1. More effective education and instruction of the dangers of failing to make an early release. Ensuring that pilots were thinking about what they were doing. (Prior to the change the hand had to be near the release when not actually signalling, you had to think what you we doing, now you don't, as long as your hand is on the release you are safe, Yeah right!!!!!!!) 2. Moving the position of the release to ensure that it is close to hand and not hidden away in the dark recesses of the cockpit. (This was mandated for tugs following the fatal tug accident at Aboyne) Apart from the faulty processess in problem solving my main concern remains, NEGATIVE CONSENT has no place in a launch procedure. |
#76
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Winch Signals
This is a world audience. What is TIBBIN?
At 11:15 17 April 2009, Don Johnstone wrote: At 08:45 17 April 2009, Tom Gardner wrote: On Apr 16, 10:50=A0pm, The Real Doctor wrote: There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? If new evidence is presented, I am prepared to change my mind. Would you refuse to change your mind? Was that not distilled wisdom and best practice? And if that was wrong, how can we be sure that the current method is right? I very much doubt it is "right" in all circumstances But that's not the point. I think the evidence exists to show that neither system is unsafe and that the solution dictated (launch marshalls) did nothing to improve matters. I agree there was/is a problem with people releasing early enough when there is a winch launch problem, and to a lesser extent aerotwow. I suggest that the problem is not one of procedure but of training and awareness. How often do we see a wing touch the ground and the launch continue and become normal. Everyone heaves a sigh of relief and goes back to what they are doing. The accident didn't happen, but if it had, the cause would be nothing to do with were the pilot happened to have his hand, but with his possibly TIBBIN state. The introduction of launch marshalls was never ever going to solve the real problem, in fact it could only make it worse, and we lost out again by circumventing a percieved problem instead of tackling the real one. The main objection to the launch marshall system is that it introduced to UK gliding one of the most dangerous practices known, that of negative consent. Something will happen as the result of third party action unless first party action is taken to stop it. One can only wonder at the towering intellect and distilled wisdom that considered introducing negative consent to a safety critical procedure. The statistics are now showing that we did not solve the original problem at all, just masked it and yet we fail to learn. There are no easy solutions, knee jerk reactions seldom work. To solve problems you first have to identify the problem, then find a solution that is not worse than the problem we already have. In this case the solution was in my view. 1. More effective education and instruction of the dangers of failing to make an early release. Ensuring that pilots were thinking about what they were doing. (Prior to the change the hand had to be near the release when not actually signalling, you had to think what you we doing, now you don't, as long as your hand is on the release you are safe, Yeah right!!!!!!!) 2. Moving the position of the release to ensure that it is close to hand and not hidden away in the dark recesses of the cockpit. (This was mandated for tugs following the fatal tug accident at Aboyne) Apart from the faulty processess in problem solving my main concern remains, NEGATIVE CONSENT has no place in a launch procedure. |
#77
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Winch Signals
I think it's an acronym for TIBenham Brain In Neutral. Tibenham (Norfolk
Gliding Club) is one of the places where Don flies. Derek C At 15:30 17 April 2009, Nyal Williams wrote: This is a world audience. What is TIBBIN? At 11:15 17 April 2009, Don Johnstone wrote: At 08:45 17 April 2009, Tom Gardner wrote: On Apr 16, 10:50=A0pm, The Real Doctor wrote: There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? If new evidence is presented, I am prepared to change my mind. Would you refuse to change your mind? Was that not distilled wisdom and best practice? And if that was wrong, how can we be sure that the current method is right? I very much doubt it is "right" in all circumstances But that's not the point. I think the evidence exists to show that neither system is unsafe and that the solution dictated (launch marshalls) did nothing to improve matters. I agree there was/is a problem with people releasing early enough when there is a winch launch problem, and to a lesser extent aerotwow. I suggest that the problem is not one of procedure but of training and awareness. How often do we see a wing touch the ground and the launch continue and become normal. Everyone heaves a sigh of relief and goes back to what they are doing. The accident didn't happen, but if it had, the cause would be nothing to do with were the pilot happened to have his hand, but with his possibly TIBBIN state. The introduction of launch marshalls was never ever going to solve the real problem, in fact it could only make it worse, and we lost out again by circumventing a percieved problem instead of tackling the real one. The main objection to the launch marshall system is that it introduced to UK gliding one of the most dangerous practices known, that of negative consent. Something will happen as the result of third party action unless first party action is taken to stop it. One can only wonder at the towering intellect and distilled wisdom that considered introducing negative consent to a safety critical procedure. The statistics are now showing that we did not solve the original problem at all, just masked it and yet we fail to learn. There are no easy solutions, knee jerk reactions seldom work. To solve problems you first have to identify the problem, then find a solution that is not worse than the problem we already have. In this case the solution was in my view. 1. More effective education and instruction of the dangers of failing to make an early release. Ensuring that pilots were thinking about what they were doing. (Prior to the change the hand had to be near the release when not actually signalling, you had to think what you we doing, now you don't, as long as your hand is on the release you are safe, Yeah right!!!!!!!) 2. Moving the position of the release to ensure that it is close to hand and not hidden away in the dark recesses of the cockpit. (This was mandated for tugs following the fatal tug accident at Aboyne) Apart from the faulty processess in problem solving my main concern remains, NEGATIVE CONSENT has no place in a launch procedure. |
#78
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Winch Signals
On Apr 17, 4:15*am, Don Johnstone wrote:
Apart from the faulty processess in problem solving my main concern remains, NEGATIVE CONSENT has no place in a launch procedure. I know the thread is about winch launch but there is a similar situation at most US contests. To maintain the required aerotow launch rates the glider pilot is required to be ready before his tug arrives. Once the rope is hooked up the pilot has no further control of the launch except to abort. The take up slack and all out signals are initiated and made by the launch marshal. Contest launches used to be made with pilot signals and I flew with that procedure before the transition. I don't know if the launch rate was increased or not, but I have no concern that the new procedure is unsafe. Note that the US aerotow "all out" is a rudder wag so there is no difference in the availability of the left hand for tow release. Andy |
#79
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Winch Signals
On 17 Apr, 09:45, Tom Gardner wrote:
On Apr 16, 10:50*pm, The Real Doctor wrote: There are problems with this nanny-knows-best approach. First of all, it's all very well to say that "BGA recommendations are distilled wisdom and best practice" ... so what about the previous BGA recommendation to have pilot signals? If new evidence is presented, I am prepared to change my mind. Would you refuse to change your mind? Not at all. As Don has pointed out, there should now be ample evidence of the effectiveness of the change, and if it supports the new systems I shall embrace launch marshalls warmly. Ian |
#80
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Winch Signals
On 17 Apr, 13:45, Del C wrote:
It leaves the pilot free to concentrate on flying the launch, and with his left hand on the release knob, ready to pull off in the event of a wing drop or other emergency. Or setting the altimeter to QNH, or retuning the radio, or selecting the task on his GPS, or scratching his crotch. A hand out of sight to the launch marshal does not mean a hand in the right place. And when did this "on the release" lark come in? I was always taught "near, but not on" the release. Ian |
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