Flight Crew Multiengine; Flight Crew Commercial; Flight Crew Instrument
Flight Crew Last 90 Days 100; Flight Crew Total 2200; Flight Crew Type 350
Communication Breakdown
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Fuel Issue; Inflight Event / Encounter Fuel Issue
Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft; Human Factors; Procedure
After arriving at ZZZ; I requested 50 gallon of a gas; 25 per side. On initial departure climb CHTs (Cylinder Head Temperature) on both engines spiked to red line. I verified mixtures rich; airspeed and deck angle. Immediately decided to make a left 180 and land. After landing queried lineman about fueling. He verified that aircraft had been misfueled with Jet A.
Pilot reported encountering engine issues during initial climb and immediately returned to the airport where it was discovered the aircraft had been mistakenly fueled with Jet-A.