Today's Message Index:
----------------------
 
     1. 09:47 AM - Re: Stall Warning Failure (Jerry Goldberg)
     2. 02:02 PM - Re: Stall Warning Failure (Brad Kramer)
 
 
 

Message 1


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Time: 
09:47:55 AM PST US
From: 
"Jerry Goldberg" <jkgcpa@ix.netcom.com>
Subject: 
Stall Warning Failure
      
      
      
      We do have an unusual stall warning system.  The ASI has a stall warning
      electrical connection.  A pressure switch interfaces between the static
      system and the control board.  It causes the green light to light & powers
      the system.  When stall setting approaches, the ASI sends a signal to the
      board to change the light to red & sound the horn.
      
      Your problem sounds like either the static connection to the pressure switch
      is bad, the pressure switch itself is bad, or the ASI setting mechanism has
      failed.  The pressure switch is available through suppliers, its number is
      printed on the side.  Trouble shoot it to see it is closing with a meter.
      Check your ASI connections in the back to see they are clean.  If it's the
      internal ASI or the board, no one can fix it.  So you would have to get a
      separate stall warning system.
      
      Let us know how it goes.
      
      Thanks,
      
      Jerry Goldberg
      N44456
      X09
      
      

Message 2


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Time: 
02:02:05 PM PST US
From: 
"Brad Kramer" <brad@vision-technology.com>
Subject: 
Re: Stall Warning Failure
      
      I don't understand how the airspeed indicator would play a role in determ
      ining when to sound a stall warning. It can't sense angle of attack,
      
      
      Any ideas?
      
      
      I'm curious now to peek behind my panel and see exactly how this all work
      s. (which I really should know anyway)
      
      
      Brad / N221FA
      
      
      -----Original Message-----
      From: Jerry Goldberg [mailto:jkgcpa@ix.netcom.com]
      Sent: Thursday, August 2, 2012 11:47 AM
      Subject: RE: Allegro-List: Stall Warning Failure
      
      l stall warning system. The ASI has a stall warningelectrical connection.
       A pressure switch interfaces between the staticsystem and the control bo
      ard. It causes the green light to light & powersthe system. When stall se
      tting approaches, the ASI sends a signal to theboard to change the light 
      to red & sound the horn.Your problem sounds like either the static connec
      tion to the pressure switchis bad, the pressure switch itself is bad, or 
      the ASI setting mechanism hasfailed. The pressure switch is available thr
      ough suppliers, its number isprinted on the side. Trouble shoot it to see
       it is closing with a meter.Check your ASI connections in the back to see
       they are clean. If it's theinternal ASI or the board, no one can fix it.
       So you would have to get aseparate stall warning system.Let us know how 
      ========================_
      =============
      








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