In this one :
http://www.amazon.com/Flew-Fuhrer-Gr.../dp/1853672637
The caption of plate 19 is "A Boeing's last landing, shot down by Wenneckers, May 1943."
Page 98, 14th May, 1943. : "...and the fiftieth was brought down by Flight Sergeant Wennekers."
Possibly 14 May 1943 Fw. Hans-Gerd Wennekers