Aircraft FQIS Malfunction

The aircraft’s Fuel Quantity Indicator System (FQIS) typically consists of strategically positioned probes within aircraft fuel tanks to relay fuel quantity measurements to the cockpit through the Electronic Centralised Aircraft Monitor (ECAM).

Many systems utilise probes consisting of two concentric tubes, measuring capacitance to determine overall fuel levels in the tank. However, microbial growth on these probes can disrupt capacitance measurements, leading to inaccurate or degraded fuel quantity indications. Such malfunctions pose significant safety risks to aircraft operations.

Both IATA guidelines and Aircraft Maintenance Manuals issued by prominent manufacturers like Airbus and Boeing recommend regular microbiological testing. The frequency of these tests is recommended based on the perceived risk of microbial growth, aiming to mitigate potential FQIS issues and uphold operational safety standards.

How can ECHA help with Aircraft FQIS Malfunction

• Conduct an analysis of fuel samples from your facility or aircraft at our UK laboratory to assess the level of microbiological contamination. Find out more about our laboratory testing service
• Supply on-site microbial test kits. ECHA’s MicrobMonitor®2 is a globally recognised industry standard test (IP 613/ASTM D7978) that can be utilised on-site or in the laboratory by non-microbiologists to detect microbiological contamination.
• Conduct inspections of tanks and systems at your fuel farm or airport if there are concerns regarding microbiological contamination. Find out more about our Site Surveys
• Offer guidance on remediation, control, monitoring strategies, and best practices. Find out more about our Consultancy Services.
• Provide comprehensive, tailored training courses on microbiological contamination of jet fuels.