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#1
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Prop to High RPM on downwind
I've been taught to set the prop to high RPM on final, but I don't like this
very much because then, when I run my checklist for the first time on downwind, I have to leave one item "open." So what's wrong with doing it on downwind? (This in a Cherokee 6 or and Arrow) It seems to work fine, does not disarrange the engine, etc. I suppose there is some small noise increase, but hardly much. So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? TIA |
#2
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Nothing
"Mitty" wrote in message ... I've been taught to set the prop to high RPM on final, but I don't like this very much because then, when I run my checklist for the first time on downwind, I have to leave one item "open." So what's wrong with doing it on downwind? (This in a Cherokee 6 or and Arrow) It seems to work fine, does not disarrange the engine, etc. I suppose there is some small noise increase, but hardly much. So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? TIA |
#3
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Mitty wrote:
I suppose there is some small noise increase, but hardly much. There is a huge noise increase. Your neighbours will love you and your airfield will have a couple of enemies more. Stefan |
#4
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I may be able to shed some light on the subject, Im not a Cherokee or Arrow pilot
but thats doens't really matter. Through out my training on a CSU type aircraft I was tought to increase to full fine pitch on finals because of the event of a go around. Hope this helps, Michael Mitty wrote: I've been taught to set the prop to high RPM on final, but I don't like this very much because then, when I run my checklist for the first time on downwind, I have to leave one item "open." So what's wrong with doing it on downwind? (This in a Cherokee 6 or and Arrow) It seems to work fine, does not disarrange the engine, etc. I suppose there is some small noise increase, but hardly much. So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? TIA |
#5
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The only reason for pushing the prop up is in case of a go-around. Let's say
you are on approach to a 10,000 foot runway and there are no airplanes in the runup areas. Why prepare for a go-around at the expense of making a lot of unnecessary noise? Approaching a 3000 foot strip, with a plane at the hold line and a kid on a bicycle riding toward the runway...sure, push the prop up. Don't do anything without a reason. "My instructor told me to" is not a reason. Bob Gardner "Mitty" wrote in message ... I've been taught to set the prop to high RPM on final, but I don't like this very much because then, when I run my checklist for the first time on downwind, I have to leave one item "open." So what's wrong with doing it on downwind? (This in a Cherokee 6 or and Arrow) It seems to work fine, does not disarrange the engine, etc. I suppose there is some small noise increase, but hardly much. So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? TIA |
#6
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Mitty wrote:
I've been taught to set the prop to high RPM on final, but I don't like this very much because then, when I run my checklist for the first time on downwind, I have to leave one item "open." So what's wrong with doing it on downwind? (This in a Cherokee 6 or and Arrow) It seems to work fine, does not disarrange the engine, etc. I suppose there is some small noise increase, but hardly much. So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? You want to land with the prop forward so that it is ready in case of a go-around. Pushing the prop lever forward on downwind won't hurt the airplane, but you will create substantially more noise, which doesn't help GA at all in an era where more and more people are pushing for airport restrictions and outright closures. So why not be kind to the neighbors and delay full forward? AOPA has a video called Flying Friendly; among the items it recommends is waiting until final to push the prop level to highest RPM. |
#7
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On Sun, 21 Nov 2004 23:51:25 GMT, Mitty wrote:
So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? Noise abatement. On final, power is reduced low-enough that the prop cannot turn 2700RPM anyway, so excess noise will not occur. -nathan |
#8
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I understand the OP's dislike of leaving a checklist item "open", but think of this a different way: It's good to be used to running through the full checklist on final as well as downwind. That makes missing an important item (ie. "gear" {8^) on a straight-in less likely. More, it's not necessarily bad having to actually *think* about a checklist (ie. deciding which GUMPS items to do now, and which to postpone). I *think* (this is just an opinion) that this would make seeing green lights when they're yellow a little less likely. Finally, I want to add my voice to those that speak of friends and enemies of aviation. We don't need to add to the latter, so we learn to "fly friendly". - Andrew |
#9
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"Chris" wrote: Nothing Noise. |
#10
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With my 182 on downwind at 90 KIAS and 15" MP, pushing the prop full forward
is not going to increase the RPM (or noise), the governer is already at its stops. I too was taught to push it in on final (in case of a go around). However, I frequently forgot (you have plenty of other things to worry about on final) so now it get pushed forward along with all the other items on the before landing checklist. -Brenor "Mitty" wrote in message ... I've been taught to set the prop to high RPM on final, but I don't like this very much because then, when I run my checklist for the first time on downwind, I have to leave one item "open." So what's wrong with doing it on downwind? (This in a Cherokee 6 or and Arrow) It seems to work fine, does not disarrange the engine, etc. I suppose there is some small noise increase, but hardly much. So (1) is everyone taught to do it on final? (2) Why? (3) What's wrong with doing it on downwind? TIA |
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