wing spar corrosion '75 M20F

[Fritz Kaiser]

Hi folks,

my friends '75 F model is at the anual inspection right now.

here you can see, what they found! 

any suggestions how to fix that!

maybe any of you had a similar proplem with the wingspar and know the good solution.

are the parts for the '75 F still available at mooney in Kerrville?

any advice is appreciate.

Thanks

 

Fritz   '95 O1

 

[Skates97]

Here's an old post with some information about the center spar splice. It is common for it to see some corrosion. It looks like it has also spread past just the splice? 

 

Searching Google with mooneyspace in the search is also often very helpful, I find it is usually better than the search function on the forums. 

https://www.google.com/search?q=mooneyspace+spar+splice+plate+site:mooneyspace.com

[carusoam]

There is a procedure for cleaning and measuring the depth of corrosion...

It is possible that it has been caught quick enough...

Those parts are susceptible to intergranular type of corrosion, that spreads quite quickly...

Do not wait...

My M20C got some similar corrosion to start under the kids feet...  no idea what was spilled under the rug... 

PP thoughts only, not a mechanic.

Best regards,

-a-

[Yetti]

Don Maxwell Has posted pictures of repairs recently.   Drill the rivets out and rivet the new one in place.  Need the pros on this one. A call to South West Texas Aviation is in order.

Edited September 9, 2019 by Yetti

[MooneyMitch]

If corrosion is measured beyond cleaning only, the cap can be removed and replaced.

It happened years ago to my 67 F model.  

The shop removed rivets from, and carefully pulled lower right side fuselage skin out of the way,  removed spar cap rivets, slid corroded cap out the right side, reinstalled new spar cap with new rivets, reinstalled fuselage skin, touched up outside rivets..... done.

Good luck ! 

[Prior owner]

8 hours ago, bluehighwayflyer said:

I wonder if this was caused by an unreported soft drink spill by a back seat passenger?  Regardless, such a shame.

Most likely, I would say.

[Oldguy]

On 9/7/2019 at 7:57 AM, Fritz Kaiser said:

Hi folks,

my friends '75 F model is at the anual inspection right now.

here you can see, what they found! 

any suggestions how to fix that!

maybe any of you had a similar proplem with the wingspar and know the good solution.

are the parts for the '75 F still available at mooney in Kerrville?

any advice is appreciate.

Thanks

 

Fritz   '95 O1

 

You might check with @Hyett6420 as I believe he had someone in Holland do a similar repair to his J just this year or the one past.