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Warning Issued on Contaminated Jet Fuel

Two Cessna Citation 550 series jets were affected in the latest DEF contamination incident. Wikipedia/Public Domain
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Key Takeaways:

  • Recent incidents have prompted safety warnings regarding the mistaken mixing of Diesel Exhaust Fluid (DEF) into jet fuel, a dangerous practice because DEF forms crystals that clog aircraft fuel systems and can be confused with an approved icing inhibitor.
  • The severity of DEF contamination was highlighted in May 2019, when two charter jets experienced engine failures and emergency landings after being serviced with contaminated fuel at a Florida airport.
  • AOPA and the FAA are advising fuel handlers and operators to implement strict procedures to prevent DEF introduction into aircraft fuel, as contamination is undetectable during preflight inspections.
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A series of recent events involving the mixing of an incorrect additive into jet fuel dispensed at a Florida airport has triggered safety warnings to both turbine operators and fuel handlers.

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