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#11
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Near mishap today
About 3 seconds..
Cherokee Warrior, Lyc O 320... Dave On Fri, 7 May 2010 10:00:10 -0700 (PDT), a wrote: On May 7, 11:41*am, Mark wrote: On May 7, 10:06*am, "Ęslop" wrote: "Mark" wrote in message ... Had carb heat on, as rpms were below the arc. But no, I wasn't instructed to input throttle during the descent. Is that what you mean? Your CFI should have been doing that. All of mine did, every time. Prevents such occurrences. I'm speechless. We have a choice of appx.7 cfi's to choose from at this academy. *I'll try another. If the head instructor knew, this one would be fired. In hindsight, the gravity of what happened yesterday is serious. I barely had time to pull out. On the way back up I was compelled to keep scanning that field. It looked possible but there was something barely visible running across it. Now I'm thinking it was a ditch. It would be useful to simply ask your CFI what happened. "Hands flying all over" doesn't cut it, there are only a few things to do. My guess would have been carb ice: If you were coming down from 4500 to say 1000 at 500 fpm that would be 6 to 8 minutes of throttle closed gliding. If the RH was high I am not at all sure I'd expect carb heat to keep ahead of the icing for that length of time, but others more expert with those airplanes may have a different opinion. My Mooney has an injected engine, but when coming down from altitude it is very rarely with a closed throttle, and cowl flaps are in play too, engines are to be babied and thermal shock is a bad thing. For that matter, the time the throttle is moved the fastest, and even then it's not very fast, is when I decide to go around. Here's a question for the aviators among us. How long do you take to go from idle to take-off power when you're "position and hold" to "cleared for immediate"? As I sit here and think about it, I'm guessing it takes me a slow count to 5 to get to full throttle, and that is assuming RPMs follow throttle position pretty closely. . . |
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