Today's Message Index:
----------------------
1. 04:07 PM - pitot test (thomas sargent)
2. 04:38 PM - Re: pitot test (Dave Saylor)
3. 09:57 PM - Re: pitot test (David Leonard)
Message 1
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Does any one know an acceptable leak rate for the Pitot system? Mine is
pretty bad right now. If I pressurize the pitot so that airspeed shows
about 130kts, it leaks down about 7 or 8 kts/minute.
What is an acceptable leak rate in terms of kts/minute (or should I say
minutes/kt)?
I should say this is not an IFR plane.
Thanks,
--
Tom Sargent
Message 2
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That's not bad at all. Our static shop always says to remember that pitot
is "an infinite column"--that is, it's always being refreshed. A good rule
of thumb would be that if you can't easily see that it's dropping then
you're doing OK. If the needle (or EFIS) movement catches your eye it's
probably too much.
If you have a mechanical indicator, remember to disconnect the airspeed
static when you do the altimeter check.
On Thursday, June 20, 2013, thomas sargent wrote:
> Does any one know an acceptable leak rate for the Pitot system? Mine is
> pretty bad right now. If I pressurize the pitot so that airspeed shows
> about 130kts, it leaks down about 7 or 8 kts/minute.
>
> What is an acceptable leak rate in terms of kts/minute (or should I say
> minutes/kt)?
>
> I should say this is not an IFR plane.
>
> Thanks,
>
> --
> Tom Sargent
>
> *
>
> *
>
>
--
Dave Saylor
831-750-0284 CL
Message 3
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Dave Salor has it right, but just to add to that.. The "pitot-static test"
is actually just a "static" test. There are no standards the pitot portion
must pass. They always seem to test it, but it is just optional for IFR.
For VFR, they don't even test the static system, it is just a transponder
test.
You wouldn't want it crazy out of wack, but it sounds like you are fine.
On Thu, Jun 20, 2013 at 4:37 PM, Dave Saylor <
dave.saylor.aircrafters@gmail.com> wrote:
> That's not bad at all. Our static shop always says to remember that pitot
> is "an infinite column"--that is, it's always being refreshed. A good rule
> of thumb would be that if you can't easily see that it's dropping then
> you're doing OK. If the needle (or EFIS) movement catches your eye it's
> probably too much.
>
> If you have a mechanical indicator, remember to disconnect the airspeed
> static when you do the altimeter check.
>
>
> On Thursday, June 20, 2013, thomas sargent wrote:
>
>> Does any one know an acceptable leak rate for the Pitot system? Mine is
>> pretty bad right now. If I pressurize the pitot so that airspeed shows
>> about 130kts, it leaks down about 7 or 8 kts/minute.
>>
>> What is an acceptable leak rate in terms of kts/minute (or should I say
>> minutes/kt)?
>>
>> I should say this is not an IFR plane.
>>
>> Thanks,
>>
>> --
>> Tom Sargent
>>
>> *
>>
>> t="_blank">http://www.matronics.com/Navigator?RV-List
>> tp://forums.matronics.com
>> _blank">http://www.matronics.com/contribution
>> *
>>
>>
>
> --
> Dave Saylor
> 831-750-0284 CL
>
> *
>
> *
>
>
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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