8 Aircraft Corrosion Types Every Mechanic Must Spot

Corrosion is one of the most critical structural threats in aviation maintenance. In this comprehensive 10-minute guide, we break down the complete anatomy of aircraft corrosion, from basic electrochemical mechanics to active field inspection and prevention. Whether you are preparing for your FAA A&P exams, studying airframe structures, or working on the ramp, understanding how metals degrade and how to stop them is essential knowledge for every technician. In this video, you will learn: The Corrosion Cell: Anode, cathode, electrolyte, and metallic path The Galvanic Series: Noble vs. active metals and dissimilar metal hazards The 8 Major Types of Corrosion: Pitting, galvanic, crevice, filiform, intergranular, exfoliation, stress corrosion cracking (SCC), and fretting High-Risk Inspection Areas: Bilges, wheel wells, battery compartments, and lap joints Detection Methods: Visual, NDT, dye penetrant, and eddy current Treatment & Removal: Mechanical and chemical neutralization processes Prevention & Protection: Primers, sealants, CPCs, and sacrificial coatings TIMESTAMPS: 0:00 - Introduction: The Threat of Corrosion 0:50 - The Electrochemical Corrosion Cell 1:55 - The Galvanic Series & Dissimilar Metals 3:10 - Common Types of Corrosion (Pitting, Crevice, Filiform) 4:45 - Severe Structural Forms (Intergranular, Exfoliation, SCC) 6:15 - Fretting Corrosion & Mechanical Wear 7:05 - Where to Look on the Aircraft 8:00 - Inspection & Detection Techniques (Visual & NDT) 8:55 - Treatment & Removal Procedures 9:40 - Prevention, Primers & Corrosion Inhibitors Subscribe to Aircraft Maintenance Learning for in-depth aviation theory, maintenance procedures, and airframe structural tutorials. #AviationMaintenance #AircraftCorrosion #AMT #AandP #AircraftMechanic #AvGeek #AviationEngineering