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Industry warning for Super Absorbant Polymers (SAP) jet fuel contamination after Boeing 777 incident
21 July 2018

The European Aviation Safety Agency (EASA) issued a safety information bulletin, warning for Super Absorbant Polymers (SAP) contamination of jet fuel, following a recent Bangladesh Boeing 777 engine failure incident.

In June 2016, a Bangladesh Biman Boeing 777-300ER suffered an engine failure when Low Pressure Turbine vanes broke following a small combustion during takeoff from Dhaka Airport, Banglades.  The takeoff was aborted.

An investigation revealed that fuel nozzles were contaminated by SAPs. These apparently entered the fuel tank during refueling.

EASA recommends aircraft operators to be aware that SAP in jet fuel can cause engine in-flight shutdowns or operational problems and are advised to report events of SAP contamination to the engine and aircraft type certificate holders, to the fueling service provider and to the national aviation authorities. Competent authorities are advised to take this issue into account during their oversight activities.