Jump to content

Rust


Recommended Posts

I’m sure this has been covered but I must be searching the wrong things since I’m coming up empty handed. My question is in regards to rust and acceptable means of mitigation in the spread of it. If someone were to find rust on their cage(acceptable amounts. Not talking scrap the plane) what are the acceptable means to deal with it? After scuffing with say some Emory cloth, scotch brite pad, etc to get rid of the offending oxidation are products like ospho/por-15 ok to use? Of course after that the primer would be touched up and a product like corrosion x used as a preventative measure.

 

Paul

 

 

Sent from my iPhone using Tapatalk

Link to comment
Share on other sites

AC 43.13-1B has a TON of info on rust treatment for tube steel parts, including our cages.  IIRC, the maintenance manual also has some more specific info.  Mooney SB 208B also has some info on treating rust on the steel cage

Obviously, the MM and SB's are approved info and AC 43.13-1B is acceptable info for repairs

Link to comment
Share on other sites

31 minutes ago, Creekrat said:

 

I’m sure this has been covered but I must be searching the wrong things since I’m coming up empty handed. My question is in regards to rust and acceptable means of mitigation in the spread of it. If someone were to find rust on their cage(acceptable amounts. Not talking scrap the plane) what are the acceptable means to deal with it? After scuffing with say some Emory cloth, scotch brite pad, etc to get rid of the offending oxidation are products like ospho/por-15 ok to use? Of course after that the primer would be touched up and a product like corrosion x used as a preventative measure.

 

Paul

 

 

Sent from my iPhone using Tapatalk

 

Good advice above. I complied with this SB 208B many years ago. Our plane has been hangared it’s whole life so the cage was in great shape. The was one area on the pilot side where it appeared that a past fuel leak had compromised the paint in an area. Small amount of surface rust easily removed with steel wool. I chose a two part, zinc chromate epoxy primer (unobtainable in my state now) for the repaint. Decades later and it still looks new.

Link to comment
Share on other sites

  • 3 weeks later...

Answers to ‘rust’....

  • Rust
  • oxidation
  • corrosion
  • SB 208
  • Surface corrosion
  • inter-granular corrosion (the evil one)

Same kind of thing, but sometimes when using the search function, the other word may get used...

When finding corrosion, you want to know what kind it is, on what type of metal...

Some is fix quickly, others can wait til annual... Some are not that important at all...

Rusty sheet metal fasteners are not as important as corroding wing spars...

Some aluminum bars corrode deeply, and quickly...

How to take care of... again depends on what material it is... Some aluminum like Al-Clad has a thin layer of protectant / aluminum... care is required to not accidentally remove the layer...

Following known procedures is important for protecting the investment....  the Mooney Maintenance Manual has most of these procedures or where to look them up...

PP thoughts only, not a mechanic...

Best regards,

-a-

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.