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  #1  
Old 05-21-2021, 10:36 AM
Harvey rv12 Harvey rv12 is offline
 
Join Date: Apr 2015
Location: Olympia WA
Posts: 197
Default OAT sensor bad?

I am getting intermittent/flickering OAT, density altitude, true airspeed, and the TAS Vne redline. I am thinking the OAT sensor is faulty. Anyone out there have one of these go bad?.
I am tempted to just buy one, but I thought I would ask the braintrust first.
Dynon Skyview, RV-12
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RV-12, bought flying
Hoskins Field, 44T
Olympia WA

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  #2  
Old 05-21-2021, 10:44 AM
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bjdecker bjdecker is offline
 
Join Date: Jun 2005
Location: Georgetown, TX
Posts: 831
Default

More likely is a wiring fault...Have you checked connectors/pins?
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Brian Decker
RV-7 (Flying)
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  #3  
Old 05-21-2021, 10:47 AM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,216
Default

I agree with bjdecker, bad connection.
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RV-12 Flying
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  #4  
Old 05-21-2021, 11:44 AM
Harvey rv12 Harvey rv12 is offline
 
Join Date: Apr 2015
Location: Olympia WA
Posts: 197
Default

The sensor terminates at the ADAHRS, with a small 2 pin connector. Last CI I pulled the connector and sprayed with "duster air" aerosol can. I did not use any chemical cleaner, nor did I have a small/micro pin cleaner or brush. Sometimes just unplugging & reconnecting will restore the connection. Its back in the tailcone, mounted on the overhead, no fun to access.
It became worse on a recent flight, and now the plane is getting it annual exam. Any suggestions on cleaning these micro pins?, they are not standard d sub pins.

https://www.flickr.com/photos/190923...posted-public/
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Tom O.
RV-12, bought flying
Hoskins Field, 44T
Olympia WA

the bitterness of poor quality
lingers long after the cheap
price is forgotten.
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  #5  
Old 05-21-2021, 11:53 AM
skydiverlv skydiverlv is offline
 
Join Date: Jul 2008
Location: kansas
Posts: 359
Default

DeOxit

https://www.ebay.com/itm/23401703680...kAAOSwHmVfkH20
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Larry Vandegrift
ULPower 260is
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  #6  
Old 05-21-2021, 12:02 PM
funflying funflying is offline
 
Join Date: Oct 2006
Location: arvada, co
Posts: 498
Default

Mine was doing the same thing a few years back and bjdecker and Joe’s suggestion cured my erratic behavior.
And yes no fun working behind the baggage wall and up high. 🤪
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Patrick Claar
Arvada, CO BJC
RV12, #401, Flying 2013, N612PC
RV6, 1996-2010 sold
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  #7  
Old 05-22-2021, 04:20 AM
D&M Dan D&M Dan is offline
 
Join Date: Sep 2006
Location: Webster, NY
Posts: 94
Default

Im having the same intermitant problem. Last condition inspection traced the wiring and check the connection but still having the OAT fall off. I was also thinking of replacing at next inspection when the plane is disassembled.
Following
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Home Field KSDC
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  #8  
Old 05-22-2021, 08:16 AM
Harvey rv12 Harvey rv12 is offline
 
Join Date: Apr 2015
Location: Olympia WA
Posts: 197
Default DeOxit

I just invested in a can of DeOxit contact cleaner. Back into the tailcone I go.
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Tom O.
RV-12, bought flying
Hoskins Field, 44T
Olympia WA

the bitterness of poor quality
lingers long after the cheap
price is forgotten.
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