The following is an excerpt from official NTSB summaries of general aviation accidents in the United States.
On the Record: Cessna 421B
Key Takeaways:
- The Cessna 421B experienced a total loss of engine power during climbout, necessitating a forced landing, due to being serviced with an improper fuel type (Jet A instead of 100LL).
- Contributing factors included the FBO employee's mistaken fueling, a smaller Jet A fuel nozzle that increased misfueling chances, and the aircraft's non-compliance with an Airworthiness Directive requiring fuel filler restrictors.
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