Shuttle Carrier Aircraft Software Communications Architecture Selective Call Acceptance Service Contract Act Sneak Circuit Analysis Service Component Architecture Single Connector Attachment Scania Special Customer Arrangement Sudden Cardiac Arrest Secured Creditor Assessment Simulated core assembly snow-covered area Software Communication Architecture Specific Collection Area SubCarrier Adapter Subsidiary Communications Authorizatio… Satellite Control Authority Schedule Change Authorization Seattle Counselors Association Secondary control assembly self-consistent approximation semiclassical coulomb approximation Senescent cell antigen Sequence Control Assembly Sexual Compulsives Anonymous Shared Communications Area Sickle cell anemia Signal Communications Axis Simulation Control Area