Hello Leo,
I know I shouldn't quote Wikipedia:
"Stationed at Gilze-Rijen the order was issued to convert to the Bf 110 night fighter. Sayn-Wittgenstein flew the Bf 110 for one short flight only, but on the night of 24 June 1943, the aircraft had technical problems and was considered unserviceable. Kümmeritz and Sayn-Wittgenstein took off in their usual Ju 88 C and shot down four Avro Lancaster bombers (victories 32–35). Sayn-Wittgenstein never flew another Bf 110 again, preferring his Ju 88 to the Bf 110."
These statement refers to
Knott, Claire Rose (2008). Princes of Darkness — The lives of Luftwaffe night fighter aces Heinrich Prinz zu Sayn-Wittgenstein and Egmont Prinz zur Lippe-Weissenfeld.
I dont't have this book. Could anyone have a look in this book to confirm that during this only Bf 110 flight nothing happened ?
Michael