The flight crew of a C-414 reported that the aircraft was fueled using 'jet a' instead of 100 ll fue...

Attributes
ACN	1467188
Time
Date	201707
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Chancellor 414A / C414
Operating Under FAR Part	Part 135
Flight Phase	Parked
Route In Use	Direct
Flight Plan	None
Component
Aircraft Component	Fuel
Person 1
Function	Pilot Not Flying
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 980 Flight Crew Type 40
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Fuel Issue

Narrative:

The aircraft was fueled by the [airport] FBO. The tanks were checked after and appeared to contain 100LL. After takeoff abnormal indications were observed by the pilot flying and pilot observing. High cht temps were the main concern. Power was reduced and airspeed was increased to remedy the problem. There was no change. The pilot observing requested to see the fuel receipt from the pilot flying. The receipt indicated that the aircraft was fueled with jet a. The pilot observing who the more experienced pilot is; was called for the controls and took over the aircraft. The aircraft was immediately turned towards [a diversion airport]. Approach was notified. The crew switched to the aux tanks which contained uncontaminated 100LL. The aircraft safely landed. The crew and passengers were unharmed.

Original NASA ASRS Text

Title: The flight crew of a C-414 reported that the aircraft was fueled using 'Jet A' instead of 100 LL fuel.

Narrative: The aircraft was fueled by the [airport] FBO. The tanks were checked after and appeared to contain 100LL. After Takeoff abnormal indications were observed by the pilot flying and pilot observing. High CHT temps were the main concern. Power was reduced and airspeed was increased to remedy the problem. There was no change. The pilot observing requested to see the fuel receipt from the pilot flying. The receipt indicated that the aircraft was fueled with Jet A. The pilot observing who the more experienced pilot is; was called for the controls and took over the aircraft. The aircraft was immediately turned towards [a diversion airport]. Approach was notified. The crew switched to the aux tanks which contained uncontaminated 100LL. The aircraft safely landed. The crew and passengers were unharmed.

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.

The flight crew of a C-414 reported that the aircraft was fueled using 'jet a' instead of 100 ll fuel.