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Thread: Cessna 172 suction gauge tolerances
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Old 18th April 2012 | 05:18
  #6 (permalink)  
blackhand
 
Joined: Feb 2009
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From: on the edge
Surely the gauge would indicate a high suction pressure if the filters are blocked.
Sounds about right to me.
The vac gauge should show 4.5 - 5 at the RPM that the POH designates, normally around 1500 to 1700 rpm.
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