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#111
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Jay Honeck wrote:
Jay, I have to ask. Which do you think is going to have the greater negative effect on your engine and/or general well being? A few simulated engine outs every once in a while or landing 1/2 a mile short after a real engine out? Well, ya got me there. But, of course, the odds of a real engine out are (thankfully) quite small. Yeah, I used to say that, too! Shirl |
#112
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Jay,
I did put a smiley behind my comment about practicing emergency spiral landing being fun and worth the cost of my engine overhaul. It is clear that our main objective for obtaining the training and frequent practice is safety. I would never jeopardize my life or harm my bird just to have fun! I have over 700hrs with thousands of takeoffs/landings. We average about 250hrs a year and fly pretty much every week year around. Aside from several long cross country trips a year, most of our hours are practice flights either on our own or with instructors. We try to mix instrument practices with visual flight maneuvers. Safety is always our utmost concern. We don't do any non-traditional patternworks without asking for tower permission or making clear and frequent announcement at uncontrolled fields. We also don't do unsual patternworks at busy airports or during busy time. One of our favorite practice spot is Sullivan County airport (MSV) with 6300x150' runway. At its busiest time, there are usually no more than 2 or 3 planes in the pattern. We always learn something new from a new instructors, always find room for improvements in our flying skills, and never feel that we are good enough that no practices are needed. I fully expect that the pilots who go out for their practices would take the same kind of precaution and they do so for safety and not for thrill seeking. I don't know the accident statistics of training or practice flights but at the start of my flight training in 2001, I spent many hours reading NTSB reports. As I recall, I would not go flying at a new airport without checking the reports. Anyway, I recalled there was only a handful of accidents occurred during flight training or practices. Lack of skills, lack of preparation etc. were the major contribution factors. Hai Longworth |
#113
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Jay Honeck wrote:
Last month, we learned a great way to fly from an instructor who specialized in Cardinal flying. One of the maneuvers we learned was the spiral emergency descent. I could not believe how we could do steep spiral 2000' over the number, dropped like a 'coke machine', executed a super slip, kicked it out the last few seconds and landed as soft as a butterfly right over the number. I've done that a few times, with and without an instructor, and it's REALLY fun! Not something you want to do at a busy field full of NORDO planes, however. I don't believe in shock cooling and seriously doubt that such maneuver can harm my engine. I don't think the maneuver you describe will harm your engine, as it only includes cutting the power to idle. I have no statistics to back this up, but I think it's the application of full power from idle (as in a go-round, touch and go, or engine out emergency landing practice) that causes the most wear and tear. But unless you're SO confident in your ability that you know it's ALWAYS going to turn out right -- and of course that's what we all strive for and usually accomplish -- you can't guarantee that it's *only* going to include cutting power to idle. If you misjudge something and/or it doesn't turn out as planned, you execute a go-round, don't you? So now it includes full power from idle. I'm not saying you shouldn't be aware of or concerned about wear and tear, but doesn't there need to be some reasonable exchange of wear and tear for competency assurance? Even if it does shorten the life of my engine, I will continue to practice it until I can execute it flawlessly all the time. (don't remember whose quote this was) When exactly are you certain that you can execute it flawlessly *all* the time? after 2 in a row? after 5 in a row? And once that's accomplished in the present, do you assume you'll always maintain that level of competency if you never practice it again? I'm sure I'm probably over-doing it here, and I apologize if I sound over the top. I guess I'm just not comfortable with assumptions even though sometimes that's all we have. |
#114
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On Oct 3, 1:56 pm, Shirl wrote:
Jay Honeck wrote: Last month, we learned a great way to fly from an instructor who specialized in Cardinal flying. One of the maneuvers we learned was the spiral emergency descent. I could not believe how we could do steep spiral 2000' over the number, dropped like a 'coke machine', executed a super slip, kicked it out the last few seconds and landed as soft as a butterfly right over the number. I've done that a few times, with and without an instructor, and it's REALLY fun! Not something you want to do at a busy field full of NORDO planes, however. I don't believe in shock cooling and seriously doubt that such maneuver can harm my engine. I don't think the maneuver you describe will harm your engine, as it only includes cutting the power to idle. I have no statistics to back this up, but I think it's the application of full power from idle (as in a go-round, touch and go, or engine out emergency landing practice) that causes the most wear and tear. But unless you're SO confident in your ability that you know it's ALWAYS going to turn out right -- and of course that's what we all strive for and usually accomplish -- you can't guarantee that it's *only* going to include cutting power to idle. If you misjudge something and/or it doesn't turn out as planned, you execute a go-round, don't you? So now it includes full power from idle. I'm not saying you shouldn't be aware of or concerned about wear and tear, but doesn't there need to be some reasonable exchange of wear and tear for competency assurance? Even if it does shorten the life of my engine, I will continue to practice it until I can execute it flawlessly all the time. (don't remember whose quote this was) When exactly are you certain that you can execute it flawlessly *all* the time? after 2 in a row? after 5 in a row? And once that's accomplished in the present, do you assume you'll always maintain that level of competency if you never practice it again? I'm sure I'm probably over-doing it here, and I apologize if I sound over the top. I guess I'm just not comfortable with assumptions even though sometimes that's all we have.- Hide quoted text - - Show quoted text - Shirl, It is my statement. Regarding your question "when exactly are you certain that you can execute it flawlessly *all* the time?", the answer can be found in my followup post: "We always learn something new from a new instructors, always find room for improvements in our flying skills, and never feel that we are good enough that no practices are needed." Hai Longworth |
#115
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Shirl wrote:
My mechanic was at my hangar this morning. I was picking his brain about this stuff. He said an airplane should be flown *at least* once a week to keep condensation/corrosion away (and other reasons but that being most important). He said Lycoming documentation actually states that an engine should be preserved (pickled) if it isn't going to be flown for 10 days or more, although no one does that. I've heard of pickling in extreme temps (cold) when not being flown *for an entire season*, but even then, seems a lot of people just let them sit. Your mechanic is a bit off on the pickling time frame. If the Lycoming documentation he is referring to is Service Letter L180B (Engine Preservation for Active and Stored Aircraft), the interval is actually 30 days of inactivity, not 10 days. John Galban=====N4BQ (PA28-180) -- Message posted via AviationKB.com http://www.aviationkb.com/Uwe/Forums...ation/200710/1 |
#116
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Even if it does shorten the life of my
engine, I will continue to practice it until I can execute it flawlessly all the time. (don't remember whose quote this was) When exactly are you certain that you can execute it flawlessly *all* the time? after 2 in a row? after 5 in a row? And once that's accomplished in the present, do you assume you'll always maintain that level of competency if you never practice it again? I'm sure I'm probably over-doing it here, and I apologize if I sound over the top. I guess I'm just not comfortable with assumptions even though sometimes that's all we have. Longworth wrote: It is my statement. Regarding your question "when exactly are you certain that you can execute it flawlessly *all* the time?", the answer can be found in my followup post: "We always learn something new from a new instructors, always find room for improvements in our flying skills, and never feel that we are good enough that no practices are needed." Yeah, it was a rhetorical question. I realize the point you were making when you said that you would continue to practice it until you could execute it flawlessly all the time was that you would never stop practicing it on occasion. I just wanted to emphasize that our competency levels fluctuate and may not be the same three months in the future as they are today. I know no one here needs to be told that. Shirl |
#117
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![]() "Jay Honeck" wrote: Yeah, I hear ya. I just don't think an occasional simulated engine-out practice is "needlessly". And I still want to know *how* it harms the engine. Exactly what parts will be damaged, and why? Can we agree that idle power/full power engine management will cause more wear and tear (AKA: "Damage") to an engine than steady-state operation? No, Jay, not until I know what the "wear and tear" is, and why increasing and decreasing the power at short intervals causes it. It's a serious question. Off-hand, I can't think why t&g engine operation would be more harmful per hour than takeoff/cruise/land, as long as no operating limits are exceeded. -- Dan T-182T at BFM |
#118
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Hi Big John,
Nice thing about doing it in a helicopter, you can slow down, WAY down, when you get near the ground. Rate of descent about 1 foot per minute, pretty much a landing from a hover on instruments, just ease it down until you find a runway light for reference or can see the pavement through the chin bubble. :-))))))) I would not like to try it in a fighter jet, they do not hover well. Or do they??? :-))))) Anyway, that was the one and only time, and I am happy it never happened again. :-)))) Regards, Paul "Big John" wrote in message ... On Tue, 2 Oct 2007 16:29:22 -0500, "Paul Riley" wrote: "Dudley Henriques" wrote in message news ![]() Each pilot in other words, is being encouraged and REMINDED, to be in a constant state of self evaluation as to the ability to perform at any given time and place. It ain't much......but it helps! -- Dudley Henriques Dudley, You are exactly right. I flew a zero-zero GCA, at night, in a UHIB, at the An Khe airfield in late 1965. No other place to go. We were on mortar patrol, had just been relieved on station by our replacement aircraft. Ground fog had moved in, even the replacement aircraft was not aware of it. No one expected it. I had an instrument rating, my copilot did not. Our other option was to go crash in the jungle someplace (with the bad guys, but where it was clear). Since we did not have enough fuel to divert to a safe landing area--more than 45 minutes away (hey, this was Nam) we decided it was our only option. Obviously, we made it, believe it or not, no damage to aircraft or crew. The GCA Controller got three quarts of Johnny Walker Red the next morning. G Goes to show, you CAN handle a bad situation, IF you remember your training. Regards, Paul PS Sorry about the misplaced thanks!! Paul Welcome to the crowd. There are only a few of us. I too made ONE zero zero at Hamilton AFB in F-94C. Finished mission and went RTB and as we approached the field watched the San Francisco Bay fog roll in before we could land. No fuel for alternate so continued with a GCA. Hit GCA minimums and no runway. Told GCA to keep talking and rotated to a landing attitude and continued decent. Next thing I knew was rolling down runway. Like you, when you gotta do you gotta do. Big John |
#119
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Jay Honeck wrote:
Yeah, I hear ya. I just don't think an occasional simulated engine-out practice is "needlessly". And I still want to know *how* it harms the engine. Exactly what parts will be damaged, and why? Can we agree that idle power/full power engine management will cause more wear and tear (AKA: "Damage") to an engine than steady-state operation? I am not at all convinced that this is the case. Prolonged idling on the ground probably isn't that good due to lack of cooling air flow, but other than that, I don't think that varying the throttle from low to high power settings necessarily causes any damage and I've read a fair bit that suggests just the opposite. Matt |
#120
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Jay Honeck wrote:
I don't think the maneuver you describe will harm your engine, as it only includes cutting the power to idle. I have no statistics to back this up, but I think it's the application of full power from idle (as in a go-round, touch and go, or engine out emergency landing practice) that causes the most wear and tear. Jay, I think that is because there are no such statistics. I believe it is pretty widely accepted that the most wear and tear on an engine is during the first few seconds after start. Matt |
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