Narrative:

The aircraft had been in maintenance for a fuel contamination issue some days prior to the flight. There was a hazmat product placed on board the aircraft (biobor) in the flyaway kit in the baggage compartment of the aircraft. The bottle had been placed in a zip lock bag and tucked away in the fly away kit. It is our suspicion (only) that the service center decided it would be good for us to have the left over unused portion. There is no known communication to/from anyone stating that the product had been placed on board inside the tote. The bottle and it's contents were discovered by a [FBO] maintenance tech some time after the flight. Suggest mandatory inspections of the flyaway kit on preflight and particularly after maintenance. The flyaway kit is not something that is on the pilots radar when preflighting an aircraft.

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Original NASA ASRS Text

Title: Flight crew reported discovering Hazmat leftover maintenance item had be placed in aircraft Flyaway Kit during preflight.

Narrative: The aircraft had been in maintenance for a fuel contamination issue some days prior to the flight. There was a HAZMAT product placed on board the aircraft (Biobor) in the Flyaway Kit in the baggage compartment of the aircraft. The bottle had been placed in a zip lock bag and tucked away in the fly away kit. It is our suspicion (only) that the service center decided it would be good for us to have the left over unused portion. There is no known communication to/from anyone stating that the product had been placed on board inside the tote. The bottle and it's contents were discovered by a [FBO] Maintenance Tech some time after the flight. Suggest mandatory inspections of the Flyaway Kit on preflight and particularly after maintenance. The Flyaway Kit is not something that is on the pilots radar when preflighting an aircraft.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.