Aircraft Fuel Tank Corrosion

Microbiologically Influenced Corrosion (MIC) occurs when microbes within biofilms interact with metal surfaces. In aircraft wing tanks, MIC of aluminium alloys is often caused by acids produced by microbes within biofilms. This corrosion is characterised by etching and pitting and can progress rapidly. Additionally, microbial acids can increase the water permeability of epoxy coatings and primers, exposing the metal to further corrosion attacks.

While chromates were historically used in coatings and primers for corrosion prevention and antimicrobial properties, they are not environmentally acceptable and are no longer used in modern aircraft.

IATA and Aircraft Maintenance Manuals from leading manufacturers like Airbus, Boeing and others recommend routine microbiological testing at a frequency based on the perceived microbial growth risk.

How can ECHA help with Aircraft Fuel Tank Corrosion?

• Use our laboratory testing service to evaluate fuel samples from your aircraft or facility for microbiological contamination and assess the risk of Microbiologically Influenced Corrosion (MIC).
• Equip your team with on-site microbial Test Kits like ECHA’s MicrobMonitor®2, an industry-standard test (IP 613/ASTM D7978) recognised globally. It detects microbes that can cause acidic corrosion and can be used on-site or in the laboratory by non-microbiologists.
• We can address your concerns about Microbiologically Influenced Corrosion by conducting site surveys of aircraft wing tanks.
• Receive expert advice on remediation, control, monitoring strategies, and best practices through our Consultancy Services.
• Enhance your team’s skills with our comprehensive, tailored training courses on microbiological contamination of jet fuel, including management of Microbiologically Influenced Corrosion.