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Corrosion 101: What Causes It?

Here's the lowdown on this natural process affecting metals.

Corrosion comes in all shapes and sizes. [Courtesy: SEAL Aviation]
Gemini Sparkle

Key Takeaways:

  • OEM service documents (like Service Bulletins), while often initially optional, are crucial for identifying and addressing issues such as corrosion, and neglecting them can lead to mandatory Airworthiness Directives (ADs).
  • Corrosion is a significant threat to aircraft structural integrity and safety, capable of escalating from initial reports to widespread issues requiring costly and mandatory repairs.
  • The Learjet 45 serves as a prime example, where reports of wing corrosion led to service bulletins, eventually culminating in an FAA Airworthiness Directive due to persistent and widespread problems.
  • Aircraft corrosion is caused by environmental factors (e.g., humidity, de-icing fluids, poor maintenance) and industrial pollutants, emphasizing the need for diligent inspections and proactive maintenance for safety and cost efficiency.
See a mistake? Contact us.

There has always been plenty of chatter concerning OEM service documents, specifically whether compliance is optional or mandatory.

Are service documents mandatory? No. Are they a good idea to implement? It depends, but for the most part, yes, and you’ll soon discover why.

Richard Scarbrough

Richard is a US Navy Veteran, A&P Mechanic, and Embry-Riddle Aeronautical University alumni. His experience ranges from general and corporate aviation to helicopters, business jets, and commercial airliners. Former owner of a 145 repair station, he currently has an aerospace product management role and is a member of the T-C-Alliance. Follow him on X (Twitter) at @RScarCo.

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