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Stall Warning Adjustment

 
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ledson



Joined: 29 Apr 2009
Posts: 62

PostPosted: Wed Sep 28, 2011 12:20 pm    Post subject: Stall Warning Adjustment Reply with quote

Is there anyone on the list that knows how to adjust the stall warning buzzer on an Allegro 2000? Mine doesn't sound until the aircraft is well below stall speed at approximately 35 MPH. Any help would be appreciated it.

Thanks,
Larry
Allegro 2000
N4362C


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brad(at)vision-technology
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PostPosted: Wed Sep 28, 2011 2:13 pm    Post subject: Stall Warning Adjustment Reply with quote

Larry... it is going off only after the plane has stalled and the nose is dropping?

Or are you just referring to the indicated airspeed where it starts to activate, but the plane is still flying?

Ideally I'd think you want it to go off about 5 mph IAS above where the stall occurs.

Brad / Bismarck ND
N221FA



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ledson



Joined: 29 Apr 2009
Posts: 62

PostPosted: Thu Sep 29, 2011 3:57 am    Post subject: Re: Stall Warning Adjustment Reply with quote

Thanks for your response Brad.
It doesn't go off until I'm at about 35 MPH after landing during the roll out. It doesn't sound at all during an approach to stall or during the stall. I know that there are two different adjustment points, one on the face of the ASI and one on the stall warning control board, but is would sure be nice to know what the procedure for adjust is instead of trying to adjust it hit or miss.

Thanks,
Larry
Allegro 2000
N4362C


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aerosiam



Joined: 26 May 2008
Posts: 59

PostPosted: Thu Sep 29, 2011 6:33 am    Post subject: Re: Stall Warning Adjustment Reply with quote

Larry

I have the same problem. It sounds after touchdown. The system worked normally for a couple of years so i am not sure an adjustment will cure your problem.

Presumably you already checked that the sensor tube is not blocked.

Paul


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ledson



Joined: 29 Apr 2009
Posts: 62

PostPosted: Thu Sep 29, 2011 7:40 am    Post subject: Re: Stall Warning Adjustment Reply with quote

Paul,

yes, I've confirmed that the tube from the from the wing leading edge is connected and intact with no leaks. I was thinking that the pressure switch may have lost some of it's effectiveness over the years and could be adjusted. But maybe not. It may require the replacement of circuit board.

Larry


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brad(at)vision-technology
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PostPosted: Thu Sep 29, 2011 8:26 am    Post subject: Stall Warning Adjustment Reply with quote

Now y'all have me wondering if mine works. It does sometimes sound just after touchdown with the nosewheel up, but when doing stalls I am focused on coordinated flight and aerodynamic cues, so maybe wouldn't notice the lack of the buzzer. Will have to try that out this weekend if the wind dies down from todays 30 kts.

807 hours TT and about 8 years on my Allegro. Will be interesting to see if there is a stall warning problem that happens on Allegros after they fly several hundred hours and a few years of age.

..brad

Bismarck ND. N221FA





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ledson <ledson(at)oneil.com> wrote:[quote]


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royalina



Joined: 15 Feb 2011
Posts: 8

PostPosted: Thu Nov 17, 2011 6:49 pm    Post subject: Re: Stall Warning Adjustment Reply with quote

I know that there are two different adjustment points, one on the face of the ASI and one on the stall warning control board...........

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