 The Blackburn B @-@ 48 Firecrest , given the SBAC designation YA.1 , was a single @-@ engine naval strike fighter built by Blackburn Aircraft for service with the British Fleet Air Arm during World War II . It was a development of the troubled Firebrand , designed to Air Ministry Specification S.28 / 43 , for an improved aircraft more suited to carrier operation.
The Blackburn B @-@ 48 Firecrest , given the SBAC designation YA.1 , was a single @-@ engine naval strike fighter built by Blackburn Aircraft for service with the British Fleet Air Arm during World War II . It was a development