[Michal]

This story pretty well described Jiří Rajlich as well in several articles and book about Air War over Bohemia and Moravia.

15 Fw 190 of II./JG 301 took off Stendal AF at 10.15 and attacked 398th BG between 10.40 and 11 hours in area Kladno - Slaný, West of Prague

Fw 190s shot down B-17G (s/n 44-6573, 603rd BS, 398th BG). Plane crashed nearby village Kvíc, not far from Slaný. 7 KIA, 1 MIA, 1 POW.

In clash with Mustangs of 352nd FG were destroyed (according Czech sources):

Fw 190D9, WNr. 500111, red 4, 8./JG 301, Fhr. Helmut-Peter Rix, NW of Ústí nad Labem (Aussig)
Fw 190D9, 8./JG 301, Lt. Walter Kropp, StaKa, unknown location
Fw 190A9, 8./JG 301, Uffz. Heger, unknown location
Fw 190A9, 8./JG 301, Uffz. Ehrlich, unknown location
Fw 190D9, white 14, Uffz. Günther Schulz, II./JG 301, KIA, between villages Třebíz and Klobuky, nearby Kladno
Fw 190A9, blue 3, Uffz. Josef Krapp, II./JG 301, between villages Vrbičany and Páleč, not far from Kladno
Fw 190A9, II./JG 301, Fhr. Heinrich Lief, area Kladno
Fw 190A9, II./JG 301, Uffz. Jürgen Dietrich, area Kladno