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Showing results for tags 'stall warning'.
Found 5 results
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I was flying back to Sweden from the UK yesterday. Went down from FL190 over the North Sea through a layer of icing in IMC. It was not much, not the complete windscreen and just some mm on the wing. The ice went away and then suddenly out of the cloud and when the ice melted below 9000 ft and speed still was about 177 kt, the stall warning started slowly to scream. The wings had all the ice melted away and after 5-10 minutes it began to scream. I had to take out the circuit breaker. After landing and in warm temperatures, it was still screaming if I enabled the circuit breaker again. I experienced a problem with the stall warning earlier and I think that had to do with why I couldn't turn off the Avionik Master last year. Suddenly the Avionik Master started to work after I have exercised the stall warning switch, but I was not able to prove it since it had gone then. My Mooney M20K 252 has no TKS so I think it is not preheated. Does anyone have experience of this?
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I'd like to know people's experiences with angle of attack instruments. Do they work? Do they not work? Are they easy to use? Are they helpful? Etc... I will be completely transparent. I know Part 23/25 and military certificated AOA systems inside and out and how they operate. I have designed a 6-hole probe (really 11 holes) to measure: airspeed, alpha (AOA), beta (angle of sideslip), altitude and vertical speed to autonomously control an unstable UAV … 30 years ago. I am currently designing a system for certificated airplanes. Thank you! Your comments will be priceless.
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Hi Mooniacs, We have a problem with our 2005 Mooney Ovation 2GX - suddendly doing flare the engine instrument switch pop out - we thought it was the tachometer, but when disconnected the problem was still present. After some research, we figured out that it's the lift detector (stall switch) that cause the problem. When we have power on, and flick the switch shortly, then the fuse "engine instruments" pop out. Some times you can activate the lift detector 2 seconds and hear the stall warning on for quite som time, other times the fuse instantly pop just the moment you flick the lift detector. The lift detector works (it activate the stall warning), but it pop the engine instrument fuse. Other Mooniacs ever had same issue? And have idea's for possible solutions other than buy a new expensive part without knowing for sure that's the issue. Best Regards from Denmark.
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Hey all, I did a quick search on this and didn't see anything directly related, but an interesting thing happened to me today on landing at PDK. I was flying through some cool light rain and it was pretty sloppy, so there was plenty of moisture around. At any rate, as we made a nice landing the stall warning horn came on like it usually does, only this time the darn thing wouldn't go off. I was on the ground at home so I just taxied that way and got back into the hangar. But the vane isn't stuck, and I tried blowing out to see if any water had gotten in there and was maybe closing the circuit. None of that mattered. So is it possible that water would cause this? If not, what else would cause that circuit to stay closed? I did bump the vane a little bit while untying from my spot at Amelia Island, but it didn't bend out of shape and it didn't misbehave until we were landing in the rain. Any ideas? Thanks!
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I was not able to get the stall warning to sound in flight on my recently purchased 1979 M20K. The switch moves freely and operates as designed when tested on the ground. The mechanic was not sure what adjustments and additional troubleshooting could be done. Any thoughts or suggestions on what I could try? Thanks. --Alex
