EASA SIB 2009-01: WITHDRAWN - Jet Fuel containing FAME (bio-diesel)

What to do

Operators who detect jet fuel containing 5 mg/kg or more FAME should notify the relevant airframe or engine type certificate holder for guidance and report the occurrence to their National Aviation Authority or EASA using the EASA Form 44 Technical Occurrence Report. They should avoid using non-compliant fuel unless explicitly permitted. No specific compliance deadlines are stated, and the bulletin's recommendations are advisory only.

Summary

EASA Safety Information Bulletin SIB No. 2009-01 titled 'WITHDRAWN - Jet Fuel containing FAME (bio-diesel)' informs owners and operators of turbine-powered aircraft about the risks of jet fuel contamination with Fatty Acid Methyl Ester (FAME), a component of bio-diesel. The bulletin highlights that Jet A-1 fuel containing 5 mg/kg or more of FAME does not meet approved fuel specifications and should not be used unless specifically authorized by airframe or engine type certificate holders. This advisory applies to all turbine engine aircraft but excludes diesel piston engine aircraft.

What changed

This bulletin introduces awareness of potential contamination of jet fuel by FAME due to shared distribution systems with bio-diesel fuels following EU Directive 2003/30/EC. It clarifies that jet fuel with FAME content at or above 5 mg/kg is non-compliant with fuel standards and advises operators on reporting and handling procedures. The bulletin is informational and does not impose mandatory requirements.

Why it matters

The presence of FAME in jet fuel can cause operational and safety issues due to its surface-active properties and tendency to adhere to metal or glass surfaces, potentially compromising fuel quality and aircraft performance. Aviation professionals must be vigilant to prevent contamination, ensure compliance with fuel specifications, and maintain airworthiness. Understanding these risks helps operators, maintenance organizations, and compliance teams avoid inadvertent use of unsuitable fuel and manage reporting obligations.