avgas

He said: "The weather is going to be the biggest part of it but also getting fuel to the right places, Avgas is very common here and in the US, but in other countries we are having it supplied for us."

There's no question an unleaded avgas is something whose time has come.

At the time, Swift claimed its production costs would be cheaper than conventional petroleum-based avgas with its tetraethyl lead octane package.

For the last 20 years, Signature, the largest supplier of AvGas, has offered discounts on the weekends through their Weekend Takeoff program and loyalty rewards through their Signature BlueSky program, which offers 10X Signature TailWins rewards points for every gallon of AvGas purchased.

Avgas currently includes lead in its formulation to meet fuel specifications and boost combustion performance (known as Motor Octane rating).

But unlike automobile gasoline, lead in avgas has remained unregulated.

While jets, which comprise the majority of commercial aircraft, don't use leaded fuel, smaller, piston-engine planes use enough leaded aviation fuel (nicknamed "avgas") to account for half of the lead pollution in American skies, making it a real air quality issue.

On the Ghibli 260 is installed a 280 HP engine utilizing standard automotive unleaded gasoline instead of AVGAS fuel.

The market mechanism was used only for aviation gases - avtur and avgas - in February 1999.

In late August, PAFI participant Swift Fuels announced that it had suspended its work under the program and "has transitioned to a high-octane unleaded avgas replacement," which was not part of its participation in PAFI.

The notice helps explain why aircraft operating regularly with Lycoming engines in routine flight service using Swift Fuels' UL94 unleaded avgas will require less frequent oil changes.