The Blackburn B.48 Firecrest (also known as the Y.A.1 under the Society of British Aircraft Manufacturers post-war code system). Another unsuccessful type for the Fleet Air Arm, it appeared in 1947 but had been designed in 1943 as a laminar-flow winged strike-fighter, and was later in competition with the Westland Wyvern. Power control with artificial feel was fitted during testing to overcome trim issues due to the thick laminar-flow wings, though it gave excellent lateral control. Never a success, the turboprop and jet age removed any last hopes and there was no point refining the remaining flight issues. Three were built. No armament was ever fitted but it was envisioned to fit 0.5in Brownings MGs in the wings plus a 2,000lb bomb load.