On 19 May, Werfft was shot down in his Messerschmitt Bf 109 G-6 (Werknummer 441090—factory number) on a transfer flight to Gardelegen.
On 19 May, Werfft's aircraft, a Messerschmitt Bf 109 G-6 (serial number 441090), was hit while en route from one location to another, specifically Gardelegen.