Preventing (or slowing down) Mooney Corrosion & Rust
Learn More About It Through MOA

const.gif (412 bytes)MOA_Logo_colorsm.jpg (14459 bytes)There is little doubt there has been tremendous advancements in corrosive preventative materials in the last 15+/- years within General Aviation.  However, Mooney corrosion/rust is relentless, insidious, and not widely understood by many mechanics out in the field.  While everyone understands preventing moisture and salt from accumulating on steel and aluminum is important, what isn't understood is the chemistry of corrosion and what type of preventative products are more effective than others.  In addition many still seem to feel bulky cover-up materials works best when many times, they simply cover-up an underlying problem rather than prevent it from occurring in the first place.   We urge every Mooney owner to learn about corrosion and what products and procedures are available nowadays to prevent it before it is becomes a major problem for your Mooney.  

MOA Taps Three Industry Corrosion Experts: Jim VanGilder of Corrosion Technologies Inc., Alcoa Aluminum Engineer,  Michael Matisco, and Aviation Consumer Investigative Reporter Coy Jacob.
JimVan275.jpg (28087 bytes)Octcover75icon.jpg (14102 bytes)Jim Vangilder: There is little doubt Jim has made it his business to learn more about corrosion perhaps than anyone.   He is owner/founder of Dallas, Tex. based Corrosion Technologies and a former Mooney owner. Jim has amassed some 8,000 hrs. and calls on hundreds of shops and mechanics yearly which provides him a wide understanding of GA as a whole.  He is especially keen on the relevance of the typical age of the Mooney airframe as it pertains to preventative maintenance and the importance of effective corrosion control.  We depend heavily on his input on how to prevent or slow down Mooney 4130 rust, 7606 spar cap corrosion, and general airframe corrosion in his column "Corrosion Corner" for The MOA PILOT.  We also look to him for objective comments on the best products and procedures to use to protect our Mooneys from their most serious enemy; corrosion. 

Michael Matisko:  Fellow Mooney owner and Mooniac Mike Matisko is a long-term Alcoa engineer based out of Davenport, Iowa.  Mike is intimately familiar with aluminum and especially the alclad widely used in Mooneys.  He has penned several articles on the subject for The MOA PILOT and we shall reprint many of them here.  Mike knows aluminum from the inside out and is available for consultation through MOA headquarters when needed.  

Coy G. Jacob:  Coy has penned most of the comparative product reports you may have read in Aviation Consumer Magazine over the years concerning corrosion control, anti-corrosion products, and preventative maintenance.  As a fellow Mooney owner and investigative journalist, Coy has personally gathered copious data on corrosion products and has tracked the effectiveness of proper applications of these products over the years.   Coy currently serves as Associate Editor for Aviation Consumer and Senior Editor for The MOA PILOT Magazines

When examining the typical M20 airframe, we consider the following to be the most serious forms of rust/corrosion:

  1. Fuselage 4130 Tubular Rust Corrosion:
    One of the main differences between Mooneys and "brand C, B, or P" aircraft is their 4130 mild steel fuselage tubes which are the primary structure in the cabin area.  
  2. Aluminum Spar, Spar Cap, and Flap Hinge Bracket Corrosion:
    The Mooney spar is sometimes called a "one piece" spar, but in actuality it is laminated with numerous thickness of (7606-T6) heat treated aluminum which is typically sensitive to corrosion, especially between the laps and around rivets and Huck bolts etc. Fabricated out of similar material are the exposed M20 wing flap hinge track brackets which are also prone to exfoliation type corrosion etc.
  3. Aluminum Skin Lap, End, and Rivet Area Corrosion: 
    Not unlike most all other GA aircraft, the Mooney alclad aluminum skins are subject to corrosion especially in lap and rivet areas which can harbor moisture and dirt etc.     

Suggested MOA Pilot Magazine PDF Reprints On Corrosion
Note:   Same as when you download our entire magazine, you will be required to have Adobe Acrobat to download these articles. Acrobat Reader software is available FREE from: Adobe on-line 
getacro.gif (712 bytes)

September, '01 MOA Pilot Magazine:  "Corrosion:  THE ENEMY FROM WITHIN", By Jim VanGilder.  This was Jim's first installment on his column titled "Corrosion Corner".  It is very good reading.         
July, 01 MOA Pilot Magazine:  "Aluminum For Mooniacs" , By Michael J. Matisko, Engineer Alcoa Aluminum Co.  This is the first installment on the proper care and feeding of the aluminum structure of your Mooney aircraft.
August '01, The MOA PILOT Magazine:  "Aluminum For Mooniacs:  Part II"  By Michael J. Matisko, Engineer Alcoa Aluminum Co.  This is the second installment on the history of the current "high tech" aluminum alclads used on Mooneys.
 September '01, The MOA PILOT Magazine:  "Aluminum For Mooniacs:  Part III"  By Michael J. Matisko, Engineer Alcoa Aluminum Co.  This is the third installment on the proper care and feeding of the aluminum structure of your Mooney aircraft.
March '01, The MOA PILOT Magazine:   "Airframe Corrosion.... Any Disbeliveers Still Out There?",  By Coy Jacob.   Several illustrated cases on-point show all Mooniacs should be most concerned about corrosion preventative maintenance.