[1] Service Control Agent
[2] Shuttle Carrier Aircraft (eine umgebaute Böing747 der NASA)
[3] Secondary/Subsidary Communications Authorization (->"IEEE Standard Dictionary")
[4] Sneak Circuit Analysis (->"IEEE Standard Dictionary") (->"NASA Acronym List")
[5] Subcarrier (->"IEEE Standard Dictionary")
[6] Sequence Control Assembly (->"NASA Acronym List")
[7] Sensor Chip Array (->"NASA NGST Acronym List")