 That month, two more bombers were shot down and one damaged.However, several of the squadron's aircraft were lost in crashes in the following months, mostly due to weather conditions or the unreliable engines of Beaufighter Mk IIF variant.On 3/4 May 1942 when 40 Junkers Ju 88 bombers attacked Exeter as part of the Exeter Blitz of the Baedeker raids there were only three Polish 307 Squadron Beaufighters available to defend the city.