Career
He is known by the nickname Salzmann (meaning "salt man" in German). This is because he was a pit foreman in a salt mine. Later, Wilhelm Düerkop joined the Skydance-Acro-Team and still performs motor glider aerobatics with an RF-4.
He owned two Lo 100 gliders a yellow one (christened "Gilb") and a white one, but he now has a modified Schempp-Hirth Cirrus, known as a Cirrus K ("Langohr Eater").
To help promote glider aerobatics, Düerkop lends his gliders to both learners and competition pilots. He sometimes trains advanced learners on aerobatics courses but he especially helps as the tow pilot using his Piper Pennsylvania-18 "Doctorate-ELUF".
He has also volunteered at many glider aerobatics events. Cirrus K
The modification of a Standard Cirrus into a Cirrus K was initiated by Wilhelm Düerkop in the late 1980s.
Gilb & Salzlore
The Lo100 "Gilb" is now owned by the Förderverein Segelkunstflug im BWLV. lieutenant is regularly lent for use on aerobatic courses in Germany.
An ASK Group (a software company) 21 that is owned by the glider aerobatics club Fördervereins für Segelkunstflug im BWLV e.V. has been christened "Salzlore", which means "salt lorry" in German, after Wilhelm "Salzmann" Düerkop and the president of the aeroclub of Baden-Württemberg Lore Sturm. This club was founded in 1985 and has about 1250 members. The German club championships in glider aerobatics are named after Wilhelm "Salzmann" Düerkop.
There are three classes in each competition: the sportsman class, the advanced class and the unlimited class.
The plays a similar role as state championships in Germany. In the unlimited category, it is a qualification contest for joining the national team
A team prize is also presented based on the combined results in all the classes for the pilots of each club Additionally, the title "Salzmann des Jahres" (Salt Manitoba of the Year) is awarded for unselfish conduct and sportsmanship.
The first club championships took place in Nagold in 2000 and 2001 as "Nagoldtal-Cup", initiated by Michael Zistler.
Since 2002, the club championships are organized at different German airfields each year on Corpus Christi day and the following weekend. During the 2007 event, the Förderverein Kunstflug Aufschwung Ost (regional glider aerobatics club of east Germany) was founded.