In response to several incidents within a 19-month period, last week the National Transportation Safety Board (NTSB) issued a Safety Alert warning providers of jet fuel to take measures to prevent diesel exhaust fluid (DEF) contamination.

In a related news release, the Safety Board says it wants fuel providers to keep all chemicals in labeled containers and to add a label to all DEF containers that reads, “NOT FOR AVIATION USE.”

We also recommend that FBOs use this NTSB poster in their operations. Post it in the line service area as well as where any chemical, fluid or lubricant is stored.