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AOPA, aviation groups call on FAA to mitigate 100LL ban in Santa Clara


December 17, 2021
Wings Staff

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The Aircraft Owners and Pilots Association and several other industry groups urged the Federal Aviation Administration (FAA) to take action regarding Santa Clara County’s rushed decision to ban the sale of 100LL as of January 1, 2022.

In a joint letter to FAA Administrator Stephen Dickson, the organizations called on the FAA to use its “aviation safety mandate to prohibit individual airports from interrupting the availability of 100LL and stifling the cooperative industry-government effort to safely transition the entire general aviation fleet to unleaded fuels. It is vital to public safety to mitigate [misfuelling] risks for pilots and passengers, and for the people and property on the ground during this transition.”

AOPA explains the FAA was reminded that engine failures from misfuellings often occur at critical phases of flight, such as on takeoff and climb out, and NTSB accident reports document the grim outcomes.

The letter pointed out, explains AOPA, that there are already misfuelling risks where visually similar airframes require different types of fuel (e.g. Cessna 421 and Cessna 441), and some popular piston aircraft models (e.g. Beechcraft Bonanzas) are fleets in which some aircraft have engines that can use unleaded fuel and other aircraft do not.

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AOPA also notes piston aircraft with high-compression engines consume 75 per cent of the 100LL sold in the U.S.; many of these engines are not approved to use unleaded fuels currently available in the marketplace. Those that are approved to use a lower-octane unleaded formulation must still obtain a supplemental type certificate to legally use the fuel, explains AOPA, which can create a dilemma and risk to pilots who land at an airport at which only a lower-octane fuel is available than what they require to safely fly.

“Yes, we all want leaded fuel out of general aviation, but the answer needs to be as safe as it is fast, not with willful disregard for safety,” said Mark Baker, President, AOPA. “Charging toward an arbitrary date with little to no consideration for safety poses a great and unnecessary risk to general aviation pilots and local communities. Let’s get this done together—but smartly.”

The letter was signed by leaders of the Aircraft Owners and Pilots Association, Experimental Aircraft Association, National Business Aviation Association, General Aviation Manufacturers Association, National Air Transportation Association, and Helicopter Association International.


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