On 5 August 1940, the first production Avro Manchester, "L7276", was delivered to RAF Boscombe Down in advance of service acceptance trials. In November 1940, the Manchester officially entered service with the newly reformed No. 207 Squadron of RAF Bomber Command. The type passed all acceptance tests by 21 December 1940, and 207 Squadron had at least 80 Manchesters on strength by the end of 1940. The Manchester's first operational mission was conducted on 24–25 February 1941 in a raid on the French port of Brest. On 13 March 1941, "L7319" became the first Manchester to be shot down by enemy fire.