Hi Axel
The Nachrichtenblatt(NB) reported 23 enemy aircraft shot down in air combat and 1 other by ground fire on 11 April 1917. 9 of these e/a fell within German lines. This total corresponds better with actual allied losses i have notes of. But the Abschusse list only 19 victories as Barrett pointed out. The Abschusse list is sometimes incomplete, and also the Daily reports in NB mentioned above is also wrong because they miss evening victories but could on the other hand also contain claims which were not officialy confirmed...!
Probably Frank Olynyk has the complete list of victories for this Day..?
Another possibility for this incident is that Lt
Otto Bernert of Jasta Bölcke himself shot down Five british aircraft within 20 minutes on the 24 April 1917. Four of these fell within German lines. One of these five seemed to has been counterclaimed by K-Flak 94(?) but was confirmed to Lt Bernert.
This was the first time a German pilot destroyed five enemy on a single Day.
VBR
Gunnar