NMFS is notifying the owners and operators of registered vessels of their assignments for the A season Atka mackerel fishery in harvest limit area (HLA) 542 and/or 543 of the Aleutian Islands subarea of the Bering Sea and Aleutian Islands management area (BSAI). This action is necessary to allow the harvest of the A season HLA limits established for area 542 and area 543 pursuant to the interim 2005 harvest specifications for groundfish in the BSAI.