Help with part number for OAT probe in wing.

[Will.iam]

My Google fu of Mooney space turned up nothing about OAT probes except for when installed a JPI. My original OAT gauge is showing 40 degree C and I think it’s the probe that is bad but I can’t seem to find a replacement for the probe that is in the right wing on the bottom side. Can someone tell me where I can get a new one that will work with the original ship’s gauge on a M20K 252?

TIA

 

[carusoam]

Got pic or description?

In 1994, the TC became a small bump… not the standard mast like shiny probe…

A really cool upgrade if you can…. Way low drag….  

Best regards,

-a-

[Guest]

From the maintenance manual there are several possibilities.

 

[Will.iam]

Looks like this 

[Will.iam]

15 minutes ago, M20Doc said:

From the maintenance manual there are several possibilities.

 

So any one of those three would work my  original ship gauge?

[N201MKTurbo]

I think I might have one.

[David Lloyd]

I've got a Lewis 56B17 probe in my parts bin.  Has MS28034-3 stamped on the side, one of the numbers listed above.  The visible end appears to match.

[Guest]

1 hour ago, Will.iam said:

So any one of those three would work my  original ship gauge?

It looks like a Westberg 399 probe from Spruce, 

[Will.iam]

Well I think first thing I need to do is test the probe in ice water bath for approx 0dC and this will also allow me examine the back side of the probe for serial numbers/ how long this probe actually is size wise. 

[Will.iam]

I think the probe part number is 800263-740 but the problem is no one list a price for this part number. Can the westberg 399 probe be used in it’s place?

[OR75]

Westach 399OT if anyone ever needs one.  

[Elijah]

On 6/30/2023 at 6:12 PM, OR75 said:

Westach 399OT if anyone ever needs one.  

So I guess this worked for you? It's a thermistor? I have the same problem with my J... 

[PT20J]

My M20J IPC shows a Norwich 104-00016

https://baspartsales.com/104-00016-mooney-m20m-norwich-outside-air-temperature-probe-with-cover-plate/?srsltid=AfmBOopW7nkHl4kO-njIuf3N54fUx7PNonn62vWyPzPMRAyqkxODrYcS
 

[OR75]

6 hours ago, Elijah said:

So I guess this worked for you? It's a thermistor? I have the same problem with my J... 

yes, it did

part number should be engraved on the part