Diesel Exhaust Fluid (DEF) Contamination Risk | NATA Fuel QC Training and Resources Available

Our industry has seen several incidents in recent months where DEF was accidently injected into jet fuel instead of FSII, causing significant aircraft damage. Although none of these incidents led to an aircraft crash, there is a substantial risk of engine failure in aircraft fueled with DEF contaminated fuel. NATA urges its members that utilize Diesel Exhaust Fluid (DEF) and Fuel System Icing Inhibitor (FSII or Prist) to review their storage, handling and personnel training procedures to prevent dangerous fuel contamination.

The Federal Aviation Administration (FAA) has released a Special Airworthiness Information Bulletin (SAIB) that addresses the dangers of DEF contaminated aviation fuel.

In December of 2017, NATA released a DEF Contamination Prevention training course through its Safety 1st Supplemental Safety Training program. This course is provided free of charge to anyone in the industry and could help prevent future incidents related to DEF Contamination. Current Safety 1st users have the ability to assign the DEF Contamination Prevention course to their employees utilizing their Safety 1st training account. Companies that are not current Safety 1st users should contact us for complimentary access to the DEF Contamination Prevention course.

Current Safety 1st Users – click here for directions on assigning courses

Non Safety 1st Users – click here to contact us at safety1st@nata.aero

Additionally, NATA provides the following resources to assist and educate our members on aviation fuel management:

For questions regarding DEF contamination prevention or any of the resources described in this alert, please contact safety1st@nata.aero.