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#21
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The problem with "check lists" is that 99% of the time they are used as "do
lists" as in "shopping list". They are not called "do lists" for a reason. You are supposed to be able to perform all tasks on the list from memory and then check yourself with the list. This way, in an emergency when you don't have time to find a list and read it, you are likely to do the right things. Used as "do lists" they are just a crutch. Used correctly as check lists, they do add to safety. I do my lists from memory and then scan the checklist to make sure I haven't forgotten anything. Bill Daniels "Ramy" wrote in message ... On Dec 15, 6:14 am, Martin Gregorie wrote: Ramy wrote: On Dec 14, 3:20 pm, tommytoyz wrote: The point is to not assume that you will never forget a vital function, no matter how good a pilot you think you are. Or rather, that it is assured that at some point, everyone will forget something ans so the importance of the checklist and that the ego in us will always try to convince us the opposite. I don't think anyone questions the importance of checklists, the problem is how to enforce yourself to use it, and use it correctly. There is much higher chance to forget using a checklist, or skip an item in the checklist, than making any other mistakes. Especially the landing checklist, any distraction and the first thing to go will likely be the checklist. Any ideas how to make sure you never skip an item on the landing checklist? Dymotape "WUF" (or whatever your acronym of choice is) onto the panel? Now, if somebody could come up with a good acronym for a dry, unflapped glider.... ULT (Undercarriage, Lookout, Trim) is about all I can come up with. -- martin@ | Martin Gregorie gregorie. | Essex, UK org |- Hide quoted text - - Show quoted text - Yeah, but my point is, how can you make sure you will follow the checklist on the panel when something goes wrong or distructs you. After all, this is when we get in trouble, when something else goes wrong. Ramy |
#22
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On Dec 16, 7:08 am, jcarlyle wrote:
Pete, what does the mnenomic TWA stand for? -John On Dec 16, 3:44 am, 309 wrote: Keep the mnemonics (USTALL, TWA, GUMP) as safety nets. TWA = Traffic, Wind, Altimeter (or Altitude) GUMP = Gas, Undercarriage, Mixture, Prop (obviously for Power) USTALL = Undercarriage, Speed, Trim, Airbrakes, Lookout, Land see http://www.soaringsafety.org/images/ustall.jpg for a USTALL poster I find myself using GUMP even in my 1-26...obviously completing that checklist is very quick...and it prompts me to remember the other two...which are similarly quick (Trim on a 1-26 is of marginal utility on approach). Nevertheless, they get me set up for safe landings...whatever I'm flying! -Pete |
#23
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On Dec 16, 9:33 am, Ian wrote:
There's also a question about when they are appropriate. Would anyone here use a checklist for thermalling? I once had someone try to convince me to use a check list for a winch launch cable break[*] - is that a good use of the couple of seconds available for reaction? Probably not. But it probably *is* useful as part of the last E in cb-sift-cbe. |
#24
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On Dec 16, 9:00 am, Cats wrote:
One of the key things seemed to be empowering the nurses to prompt the doctors where necessary - they often knew the doctors were not following the procedure but for various reasons didn't intervene. (In fact I read it that they ended up with a 'checklist' nurse who checked it all on a clipboard as the procedure was executed) Yes, exactly. The same occurs on the flight deck - there have been accidents with commercial traffic where the FO has realised something is wrong and either not told the PIC or been overruled. A famous such crash occurred near to me - the PapaIndia Trident crash at Staines. Cause was overbearing P1 that was subtly incapacitated by a heart attack; P1 overruled the P2 and the Trident entered a deep stall. |
#25
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Thanks, Pete. I use USTALL on every approach set-up, and have heard
GUMPS, although as a non-power pilot I've never used it. But I've never run across TWA, and I wonder why - it seems very, very important for any landing! Thanks for educating me, and giving me a checklist I'll be doing on all future approach set-ups. -John On Dec 16, 11:52 am, 309 wrote: TWA = Traffic, Wind, Altimeter (or Altitude) GUMP = Gas, Undercarriage, Mixture, Prop (obviously for Power) USTALL = Undercarriage, Speed, Trim, Airbrakes, Lookout, Land seehttp://www.soaringsafety.org/images/ustall.jpgfor a USTALL poster |
#26
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Great discussion so far.
A couple points... In soaring we DO have crew particularly in the staging, take-off, and tow phase. We sometimes have crew during landing as well if there is a ground crew with radio. So, crew resource management has great value in soaring operations and should be utilized. One of the jobs crew can perform is making sure pilots complete their checklists; Critical Assembly Checks, Positive Control Checks, and, if done out-loud, pre take-off checklist. Teach your ground crew not to hook-up a towline until they hear the pilot complete the checklist. In-cockpit checklists for glider ops should be done from memory (pre take-off, landing, off-airport landing) WUFSTALL can be completed easily in 20 seconds if done from memory and at the approapriate time during the approach. CBSIFTCB plus WET (wind, emergency procedures, traffic) takes less than a half a minute to SAY OUT LOUD and verify or touch each item. I teach to say "Emergency below 200 ft lower the nose land ahead, above 200 lower the nose, land ahead or behind". Anything more is either too much, takes too long, or just simply too confusing for the reptile brain that will be trying to accomplish it during a real emergency. On the last item, Traffic, make eye contact with the ground crew who should now be patiently waiting at your wing tip and say TRAFFIC and look around to remind them to look around for you. This is crew resource management. It takes no extra time and gets everyone watching each others back. There is no excuse for taking-off with canopys unlatched, controls not hooked-up. Look for other ways in which CRM can be utilized in soaring operations and share them with others here. Matt Michael |
#27
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Ian wrote:
Jack wrote: False. Though we may have a crew to share the load, it takes more time to work with a crew. The time available to provide a solution is often inversely related to the size of the problem. The pros flying commercial jets /do/ have more time to deal with check lists because (a) the person flying the aircraft doesn't necessarily have to have anything to do with the checklisting (b) they have autopilots and (c) they don't need to look out. Those are all very nice things to have--some of them are even true. Of course there are checklists, and then there are checklists--and many different kinds of problems to be encountered. We do in fact make an effort to slow things down and create more time to do checklists, both written and mental, when possible. The study of crew coordination, and use of all the crew's resources, has become a science--and a new respect for the art of cockpit resource management permeates the industry. It appears you believe the foregoing is somehow an argument against using checklists in other types of aircraft. I think it should, for those with open minds, describe the importance to professionals of defining the proper use of check lists and training oneself and others in using checklists appropriately. (a) The removal of the flying pilot from the checklist loop is not a smart idea, though he cannot give full attention to it. He must be aware of what is happening with regard to the problem-solving process and participate in it to an appropriate extent, without ever being distracted from aircraft control. Doing the checklist is the easy part. (b) The autopilots usually work--but not always. There was no checklist, as I remember it (retired now for five years), for loss of all autopilot function. What do you suppose we would do then--possibly refer to a mental "checklist" of things which must be approached in a different manner in order to insure a successful outcome? (c) There are times when less visual clearing is necessary than at other times. You may have seen a crew paying less attention to what's going on outside periodically during the high altitude cruise portion of a flight. That too is human nature, but there are very few times when it is appropriate to ignore what's happening outside for more than a few seconds. There are some quite infamous examples where that has been disastrously demonstrated. The best glider pilots I have flown with do use checklists appropriate to gliders and use them in a manner which enhances the safety and efficiency of glider operations. And I base my evaluation of their abilities on far more than their use of checklists, by the way--in case you perceive me as some sort of anal procedural-minded robot. I doubt that those I have flown with would agree with such a perception. Though it has been decades since I last flew a military fighter (the F-100) it is my understanding that military pilot training has adapted in similar fashion and parallels airline training with regard to use of checklists and resource management. These principles are not new however, only the system's acknowledgment that the scientific approach to resource management is superior to the old model is new (relative to the mindset of a half-century ago). When there is only one crew member, no autopilot, and very little that can possibly go wrong with the ship, what is different but the number of checklists and their length? Do the principles change? I think not. I'm basing this on a few jump seat trips (in the Good Old Days), but I have never had time in a glider to take my hands off the controls, focus wholly on the inside of the cockpit and go through a seventeen point check list. Of course, I don't have the advantage of a perspective on these matters gained from a few jump seat trips. I've spent far too many hours in jump-seats, though perhaps just the right amount of hours in right- and left- and only-seats. And it is possible I've encountered a seventeen-point checklist along the way, but I don't remember any. I do remember very well the efforts to shorten the checklists, as well as to reduce the number of items which must be committed to memory. That was, and is, a good thing. If you have never had occasion to remove your hands from the flight controls in a glider, perhaps you should try to relax more. The ship sometimes does better on its own, at least for me. Incidentally, you say that "checklists ... should alway be used". Do you have a checklist for joining thermals? For thermal centring? For stall recovery? For dolphin flying? I think one could answer, "Yes", to your question, but only in the most pedantic sense. You will, upon rereading, perhaps note that I did not say that there should be a checklist for every action--nor every consideration--that a pilot undertakes. I do have both mental and written checklists for certain phases of flight. The written ones are very few, and very short. The challenge is to use them, always, because it is my nature, as with most humans, to think in the moment that I don't need them. Flying a glider is, I'm sure you will agree, a very simple sort of flying. It can be deceptively so. One needs only to forget a single item to ruin ones day. If a checklist is defined for a given phase of your operation, then use it--or not, since we are unlikely ever to fly together, or even in the same area. If I was instructing and/or giving check-rides in gliders I would require the use of a written checklist for certain aspects of pre-flight, in-flight, and post-flight operations. You would likely not be pleased to be in the other seat, but I can live with that. Jack |
#28
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On 16 Dec, 19:19, J a c k wrote:
I think it should, for those with open minds, describe the importance to professionals of defining the proper use of check lists and training oneself and others in using checklists appropriately. We are in complete agreement, you know. I don't think either of us would substitute "indiscriminately" for "appropriately", would we? The best glider pilots I have flown with do use checklists appropriate to gliders and use them in a manner which enhances the safety and efficiency of glider operations. How would you define "best glider pilots" there? I have flown a few times with a world champion, and he did not ask for any more than the usual two BGA mnemonics. When there is only one crew member, no autopilot, and very little that can possibly go wrong with the ship, what is different but the number of checklists and their length? Do the principles change? I think not. That's perhaps a little evasive, since the number and length may change drastically in such circumstances. But yes, the principal of "use checklists when appropriate" holds good! I think one could answer, "Yes", to your question, but only in the most pedantic sense. You will, upon rereading, perhaps note that I did not say that there should be a checklist for every action--nor every consideration--that a pilot undertakes. We agree there as well. If a checklist is defined for a given phase of your operation, then use it--or not, since we are unlikely ever to fly together, or even in the same area. If I was instructing and/or giving check-rides in gliders I would require the use of a written checklist for certain aspects of pre-flight, in-flight, and post-flight operations. You would likely not be pleased to be in the other seat, but I can live with that. I'm a bit worried by this "if there is a checklist, use it" approach. Now that I've told you about the NARSTI checklist for winch cable breaks, will you always use it? Please don't get me wrong. I'm not agin' the things - but I am agin' unquestioning acceptance of anything while flying. Except spin recovery! Ian |
#29
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On 16 Dec, 18:13, wrote:
One of the jobs crew can perform is making sure pilots complete their checklists; Critical Assembly Checks, Positive Control Checks, and, if done out-loud, pre take-off checklist. Teach your ground crew not to hook-up a towline until they hear the pilot complete the checklist. One club I fly with has a column in the launch log for "positive control checks completed" and won't launch you until this has been done (once per day) at the launch point. I think that's a jolly good idea. I teach to say "Emergency below 200 ft lower the nose land ahead, above 200 lower the nose, land ahead or behind". How accurate are your altimeters during a winch launch? Ian |
#30
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On 16 Dec, 15:39, "Bill Daniels" bildan@comcast-dot-net wrote:
The problem with "check lists" is that 99% of the time they are used as "do lists" as in "shopping list". Absolutely. I was taught "put the wheel down when you decide to land, no matter how high" and "check that it's down in the circuit". I am amazed at the number of people who wait until the last minute or two of flight to put the wheel down, and I have seen one serious crash as a result. Ian |
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