benim şuradan anladığım kadarıyla gerekli değil hocam abd vizeniz olduğu için,
As a citizen of the exempted countries to a Schengen visa, you are obliged to obtain an airport transit visa in order to pursuit this line of travel yet you won’t be needing a “C” visa designed for a short stay in a Schengen country up to the maximum of 90 days.
Exceptions to this rule apply to these circumstances as following:
If the nationals of these countries hold a valid/unexpired USA Visa;
...
kaynak:
www.schengenvisainfo.com