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From: Dr Andre Katz <bu131@swbell.net>
Subject: Re: [LML] Re: Hickman's Accident: NTSB Probable Cause Report
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due to whatever reason my IV-P at high altitude usually when using MP of 31 inches with 2500 RPM and FF of 16.5 g/hr and changing fuel tanks, unless I go momentarily into high boost my engine quits. The switch to high boost does not stop the engine, I use low boost ocassionally on take off but usually not. In the air at lower altitudes high boost does not make the engine quit. 550 continental standard I do not know the TDC settings. I have 400 hrs in it so i learned to live with it.
  andres

Kevin Stallard <Kevin@arilabs.net> wrote:
                The Piper turbo arrow that I fly from time to time has a small turbo charged continental six cylinder engine with a low and high boost pump switch.  If you accidentally put the high boost on, it kills the engine. 
   
  The high and low boost switch is a three way switch with a metal locking mechanism that won’t allow you to turn on the high boost with out pushing the metal guard up.   It takes some effort to do…
   
  Kevin 
   
   
    I was advised when I built my panel not to put the high boost and low boost on a three way switch.  The reasoning was you could easily go to turn off the low boost and accidentally hit the switch all the way to high boost.  Is that what the NTSB is suggesting here?

     

    Mike Easley




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<div>due to whatever reason my IV-P at high altitude usually when using MP of 31 inches with 2500 RPM and FF of 16.5 g/hr and changing fuel tanks, unless I go momentarily into high boost my engine quits. The switch to high boost does not stop the engine, I use low boost ocassionally on take off but usually not. In the air at lower altitudes high boost does not make the engine quit. 550 continental standard I do not know the TDC settings. I have 400 hrs in it so i learned to live with it.</div>  <div>andres<BR><BR><B><I>Kevin Stallard &lt;Kevin@arilabs.net&gt;</I></B> wrote:</div>  <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">  <META content="Microsoft Word 11 (filtered medium)" name=Generator>  <STYLE>  <!--   /* Style Definitions */   p.MsoNormal, li.MsoNormal, div.MsoNormal   {margin:0in;   margin-bottom:.0001pt;   font-size:12.0pt;   font-family:"Times New Roman";}  a:link, span.MsoHyperlink   {color:blue;  
 text-decoration:underline;}  a:visited, span.MsoHyperlinkFollowed   {color:blue;   text-decoration:underline;}  span.EmailStyle17   {mso-style-type:personal-reply;   font-family:Arial;   color:navy;}  @page Section1   {size:8.5in 11.0in;   margin:1.0in 1.25in 1.0in 1.25in;}  div.Section1   {page:Section1;}  -->  </STYLE>    <DIV class=Section1>  <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">The Piper turbo arrow that I fly from time to time has a small turbo charged continental six cylinder engine with a low and high boost pump switch.&nbsp; If you accidentally put the high boost on, it kills the engine. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></div>  <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p>&nbsp;</o:p></SPAN></FONT></div>  <div class=MsoNormal><FONT
 face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">The high and low boost switch is a three way switch with a metal locking mechanism that won’t allow you to turn on the high boost with out pushing the metal guard up.&nbsp;&nbsp; It takes some effort to do…<o:p></o:p></SPAN></FONT></div>  <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p>&nbsp;</o:p></SPAN></FONT></div>  <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Kevin <o:p></o:p></SPAN></FONT></div>  <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p>&nbsp;</o:p></SPAN></FONT></div>  <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p>&nbsp;</o:p></SPAN></FONT></div>  <DIV>  <div
 class=MsoNormal><FONT face=Arial color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">I was advised when I built my panel not to put the high boost and low boost on a three way switch.&nbsp; The reasoning was you could easily&nbsp;go to turn off the low boost and accidentally hit the switch all the way to high boost.&nbsp; Is that what the NTSB is suggesting here?<o:p></o:p></SPAN></FONT></div></DIV>  <DIV>  <div class=MsoNormal><FONT face=Arial color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">&nbsp;<o:p></o:p></SPAN></FONT></div></DIV>  <DIV>  <div class=MsoNormal><FONT face=Arial color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Mike Easley</SPAN></FONT><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT></div></DIV></DIV></BLOCKQUOTE><BR>
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