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