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Unleaded Fuel
AircraftFlight Schools Discuss Getting the Lead Out
The recent news about the University of North Dakota returning its fleet to leaded fuel after discovering excessive valve recession in aircraft using Swift Fuels UL94 has grabbed the attention of many aircraft operators.
Meg Godlewski![](https://www.flyingmag.com/uploads/2023/11/shutterstock_2359300765-scaled-e1700175519267.jpg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
![](https://www.flyingmag.com/uploads/2023/11/shutterstock_1853809516-scaled-e1699658148323.jpg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
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