Passage: Maresyev was born in Kamyshin to Russian parents. His father was a skilled laborer who died shortly after he had returned from World War I. Before joining the army in 1937 Maresyev worked as a turner and then participated in the construction of Komsomolsk-on-Amur. In 1940 he graduated from Bataysk Military School of Aviation. He began his flights as a fighter pilot in August 1941. He had shot down four German aircraft by March 1942, but on 4 April 1942 his Polikarpov I-16 was shot down near Staraya Russa, almost certainly by future Knight's Cross holder and 48-kill experte Fw. Peter Siegler(3./JG-54) and was nearly captured by Nazi forces.

Question: When was Peter Siegler's Aircraft taken down near Staraya?
4 April 1942