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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:

  • Aircraft corrosion is a natural deterioration process that poses significant risks to structural integrity and safety, manifesting in various forms like pitting and stress corrosion cracking.
  • Manufacturer Service Bulletins (SBs), initially recommendations for issues like corrosion, often escalate to mandatory Airworthiness Directives (ADs) if problems become widespread and critical, as seen with the Learjet 45 wing spar corrosion.
  • Corrosion is caused by environmental factors (humidity, deicing fluids) and industrial pollutants; therefore, diligent maintenance, regular inspections, and adherence to manufacturer recommendations are crucial for preventing issues, reducing costs, and ensuring aircraft safety.
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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