This Fokker 70 of KLM cityhopper flew over the city of Haarlem on a blend of Used Cooking Oil (UCO) and kerosine on 31.08.2011 (on the memory of 100th anniversary of the first flight of Anthony Fokker - he flew over Haarlem and around the St. Bavo Church on August 31st 1911 in his Fokker Spin). The extra sticker was applied on the occasion of this contemporary special event. Seen here on visit in Prague on KL1357/8 from/to Amsterdam on 02.09., keep wearing this sticker.