On August 31, 1982, the Fokker Four Foundation was established. The fortieth anniversary of this special foundation was therefore celebrated on August 31, 2022 with a special anniversary fly-in at the aviation museum Aviodrome. The current four Fokker S.11s of Fokker Four have been housed in the T2 hangar at Aviodrome for many years. The Dutch Thunder Yaks were one of the many visitors and of course loved to fly by in formation. Read a report on AirOnline.