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Stall warning system

 
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Aero Siam



Joined: 30 Jan 2006
Posts: 16
Location: Thailand

PostPosted: Fri Nov 15, 2019 4:32 am    Post subject: Stall warning system Reply with quote

Hi all

Can anyone help with the pneumatic stall sensor connections ? If I suck on the orange hose, the buzzer sounds. I presume this end is connected to the hose that runs to the leading edge and that the other side is connected to the static system. Is that correct ?

Also I saw there were posts in the past about the adjustment knob on the left bottom of the ASI. Does anyone know how this operates?

Regards
Paul


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aerosiam



Joined: 26 May 2008
Posts: 59

PostPosted: Tue Dec 17, 2019 3:42 am    Post subject: Re: Stall warning system Reply with quote

I think I have the answer to this.
It's an MPL 503 pressure switch
https://www.aircraftspruce.com/catalog/inpages/mpl500series-ps.php
The V-vacuum side connects to the port in the leading edge and the pressure side to the static system
It tests correctly on the ground with slight suction on the port


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