Cessna Aircraft introduced a treatment to protect Citation jets based in Europe from the corrosive effects of potassium formate, the environmentally friendly but aluminum-hostile runway de-icer increasingly used across the region. The treatment is available under an enhancement to Cessna’s ProTech factory maintenance program, called ProTech+. The anti-corrosion procedure entails a thorough airframe inspection and application of Corban 23, a super-penetrating fluid that creates a protective barrier on the airframe. ProTech+ is available at Cessna’s factory-owned service centers in Europe.