NASA Abbreviations and Acronyms

1. R&OA
   Reliability and Quality Assurance
2. R&Z
   Range and Zero
3. RAUIS
   Remote Acquisition Unit Interconnecting Station
4. RD/SB
   Rudder Speed Brake
5. REI-N4
   Rei-n4011ite Cation
6. REQN4TS
   Requirements (rqn4ts Preferred)
7. RETEN
   Retention
8. RETRV
   Retrieve
9. RM/MS&C
   Control
10. S/0
    Shutoff
11. S/0
    Switchover
12. S/AC
    Stabilization/attitude Control
13. S/EOS
    Standard Earth Observation Satellite
14. S/SYS
    Subsystem
15. S@MSCC
    System
16. S@MSCC
    Shuttle Mission Simulator Computer Complex
17. SAMSOR
    Samso Regulation (now Sdr)
18. SCNP
    Preliminary Specification Change Notice
19. SCRSY
    Serialized Control and Record System
20. SCSG
    Strain Gauge Signal Conditioner

Last updated: May 6, 2025 — Total entries: 14,020