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Is my static port leaking?



 
 
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  #1  
Old August 9th 04, 01:34 PM
Derrick Early
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Default Is my static port leaking?

The plane does have an alternate static source vented inside; however, I
pushed the valve in to select the exterior port. My guess is that either
this is normal or the static pressure system has a leak.

"Ron Rosenfeld" wrote in message
...
On Fri, 6 Aug 2004 10:11:59 -0400, "Derrick Early"
wrote:

When I close the door to my 172, the airspeed, vsi and altimeter

instruments
jump. Does this mean that I have a leak in my static line? The last check
of the system was 18 to 20 months ago. The last thing that I want is

errors
in altitude while flying IFR.


Do you have an alternate static source that is inside the cabin, and
possible in the wrong position?


--ron


  #2  
Old August 9th 04, 01:38 PM
Derrick Early
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Default

Yes, this is possible. I'm trying to figure out if jumpy instruments is
normal. I think that I should make a test or have it tested.

"SFM" wrote in message
...
Could this just be that the static port is very close to the pilot's door
and you closing it cause a disruption of air over the outside static port?

Scott

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"Derrick Early" wrote in message
...
When I close the door to my 172, the airspeed, vsi and altimeter

instruments
jump. Does this mean that I have a leak in my static line? The last

check
of the system was 18 to 20 months ago. The last thing that I want is

errors
in altitude while flying IFR.





  #3  
Old August 15th 04, 01:13 AM
Bill Hale
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Default

"Derrick Early" wrote in message ...
When I close the door to my 172, the airspeed, vsi and altimeter instruments
jump. Does this mean that I have a leak in my static line? The last check
of the system was 18 to 20 months ago. The last thing that I want is errors
in altitude while flying IFR.


A way you can evauluate this... If you are flying along and you OPEN
the alternate static port and it doesn't do anything... you have a leak.
Usually will change the altitude 50-100 feet.

Bill Hale
 




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