The following is an excerpt from official NTSB summaries of general aviation accidents in the United States.
On the Record: Cessna 421B
Key Takeaways:
- A Cessna 421B experienced a total loss of engine power and was forced to land after being mistakenly serviced with Jet A fuel instead of the required 100LL aviation fuel.
- The misfueling resulted from an FBO employee's error, exacerbated by a recently installed smaller, round Jet A fuel nozzle that increased the chances of incorrectly fueling aircraft.
- A significant contributing factor was the aircraft's non-compliance with an Airworthiness Directive requiring fuel filler restrictors, which would have prevented the Jet A nozzle from fitting the 100LL fuel port.
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